1513981890 has 48 divisors (see below), whose sum is σ = 4003084800. Its totient is φ = 396884256.

The previous prime is 1513981871. The next prime is 1513981891. The reversal of 1513981890 is 981893151.

1513981890 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×1513981890⁴ (a number of 38 digits) contains 4444 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (1513981891) 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, 137250 + ... + 147869.

It is an arithmetic number, because the mean of its divisors is an integer number (83397600).

Almost surely, 2^1513981890 is an apocalyptic number.

1513981890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1513981890 is an abundant number, since it is smaller than the sum of its proper divisors (2489102910).

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

1513981890 is a wasteful number, since it uses less digits than its factorization.

1513981890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285191 (or 285188 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 45.

The square root of 1513981890 is about 38909.9202003808. The cubic root of 1513981890 is about 1148.2599747309.

The spelling of 1513981890 in words is "one billion, five hundred thirteen million, nine hundred eighty-one thousand, eight hundred ninety".