2135678490 has 48 divisors (see below), whose sum is σ = 6057563616. Its totient is φ = 517740000.

The previous prime is 2135678483. The next prime is 2135678491. The reversal of 2135678490 is 948765312.

2135678490 is a `hidden beast` number, since 2 + 1 + 3 + 567 + 84 + 9 + 0 = 666.

2135678490 is digitally balanced in base 10, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2135678490² = 9122245225297360200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

2135678490 is strictly pandigital in base 10.

It is not an unprimeable number, because it can be changed into a prime (2135678491) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1077636 + ... + 1079615.

It is an arithmetic number, because the mean of its divisors is an integer number (126199242).

It is a 2-persistent number, because it is pandigital, and so is 2⋅2135678490 = 4271356980, but 3⋅2135678490 = 6407035470 is not.

Almost surely, 2^2135678490 is an apocalyptic number.

2135678490 is an abundant number, since it is smaller than the sum of its proper divisors (3921885126).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2135678490 is a wasteful number, since it uses less digits than its factorization.

2135678490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2157275 (or 2157272 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 2135678490 is about 46213.4016276664. The cubic root of 2135678490 is about 1287.7907200350.

It can be divided in two parts, 2135 and 678490, that added together give a square (680625 = 825²).

The spelling of 2135678490 in words is "two billion, one hundred thirty-five million, six hundred seventy-eight thousand, four hundred ninety".