1540357512 has 64 divisors (see below), whose sum is σ = 4184371200. Its totient is φ = 470733120.

The previous prime is 1540357499. The next prime is 1540357519. The reversal of 1540357512 is 2157530451.

It is not an unprimeable number, because it can be changed into a prime (1540357519) 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, 40348 + ... + 68619.

It is an arithmetic number, because the mean of its divisors is an integer number (65380800).

Almost surely, 2^1540357512 is an apocalyptic number.

1540357512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1540357512 is an abundant number, since it is smaller than the sum of its proper divisors (2644013688).

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

1540357512 is a wasteful number, since it uses less digits than its factorization.

1540357512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109026 (or 109022 counting only the distinct ones).

The product of its (nonzero) digits is 21000, while the sum is 33.

The square root of 1540357512 is about 39247.3886010267. The cubic root of 1540357512 is about 1154.8897059276.

Adding to 1540357512 its reverse (2157530451), we get a palindrome (3697887963).

The spelling of 1540357512 in words is "one billion, five hundred forty million, three hundred fifty-seven thousand, five hundred twelve".