1540890012 has 48 divisors (see below), whose sum is σ = 3753183392. Its totient is φ = 491546880.

The previous prime is 1540890007. The next prime is 1540890097. The reversal of 1540890012 is 2100980451.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1363 + ... + 55530.

Almost surely, 2^1540890012 is an apocalyptic number.

1540890012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1540890012 is an abundant number, since it is smaller than the sum of its proper divisors (2212293380).

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

1540890012 is a wasteful number, since it uses less digits than its factorization.

1540890012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56998 (or 56996 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 1540890012 is about 39254.1719056714. The cubic root of 1540890012 is about 1155.0227719878.

The spelling of 1540890012 in words is "one billion, five hundred forty million, eight hundred ninety thousand, twelve".