1045969881 has 16 divisors (see below), whose sum is σ = 1522637568. Its totient is φ = 633410000.

The previous prime is 1045969861. The next prime is 1045969891. The reversal of 1045969881 is 1889695401.

It is a cyclic number.

It is not a de Polignac number, because 1045969881 - 2⁵ = 1045969849 is a prime.

It is a super-2 number, since 2×1045969881² = 2188105983918308322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1045969801) 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, 31006 + ... + 55256.

It is an arithmetic number, because the mean of its divisors is an integer number (95164848).

Almost surely, 2^1045969881 is an apocalyptic number.

1045969881 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1045969881 is a deficient number, since it is larger than the sum of its proper divisors (476667687).

1045969881 is a wasteful number, since it uses less digits than its factorization.

1045969881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25572.

The product of its (nonzero) digits is 622080, while the sum is 51.

The square root of 1045969881 is about 32341.4576202125. The cubic root of 1045969881 is about 1015.0943091449.

The spelling of 1045969881 in words is "one billion, forty-five million, nine hundred sixty-nine thousand, eight hundred eighty-one".