1052491491 has 24 divisors (see below), whose sum is σ = 1601600000. Its totient is φ = 664183152.

The previous prime is 1052491481. The next prime is 1052491493. The reversal of 1052491491 is 1941942501.

It is a happy number.

1052491491 is a `hidden beast` number, since 1 + 0 + 524 + 91 + 49 + 1 = 666.

It is not a de Polignac number, because 1052491491 - 2²¹ = 1050394339 is a prime.

It is a super-2 number, since 2×1052491491² = 2215476677254806162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1052491493) 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, 340290 + ... + 343368.

Almost surely, 2^1052491491 is an apocalyptic number.

1052491491 is a deficient number, since it is larger than the sum of its proper divisors (549108509).

1052491491 is a wasteful number, since it uses less digits than its factorization.

1052491491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5103 (or 5100 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 1052491491 is about 32442.1252540582. The cubic root of 1052491491 is about 1017.1996400074.

The spelling of 1052491491 in words is "one billion, fifty-two million, four hundred ninety-one thousand, four hundred ninety-one".