2138555010 has 32 divisors (see below), whose sum is σ = 5182369920. Its totient is φ = 564743808.

The previous prime is 2138554997. The next prime is 2138555017. The reversal of 2138555010 is 105558312.

It is a super-2 number, since 2×2138555010² = 9146835061592200200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (2138555017) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 342955 + ... + 349134.

It is an arithmetic number, because the mean of its divisors is an integer number (161949060).

Almost surely, 2^2138555010 is an apocalyptic number.

2138555010 is an abundant number, since it is smaller than the sum of its proper divisors (3043814910).

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

2138555010 is a wasteful number, since it uses less digits than its factorization.

2138555010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692202.

The product of its (nonzero) digits is 6000, while the sum is 30.

The square root of 2138555010 is about 46244.5132961738. The cubic root of 2138555010 is about 1288.3686306623.

The spelling of 2138555010 in words is "two billion, one hundred thirty-eight million, five hundred fifty-five thousand, ten".