1051769920 has 28 divisors (see below), whose sum is σ = 2504527884. Its totient is φ = 420707840.

The previous prime is 1051769903. The next prime is 1051769963. The reversal of 1051769920 is 299671501.

It can be written as a sum of positive squares in 2 ways, for example, as 438316096 + 613453824 = 20936^2 + 24768^2 .

It is a super-2 number, since 2×1051769920² = 2212439929233612800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1643071 + ... + 1643710.

Almost surely, 2^1051769920 is an apocalyptic number.

1051769920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1051769920 is an abundant number, since it is smaller than the sum of its proper divisors (1452757964).

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

1051769920 is an equidigital number, since it uses as much as digits as its factorization.

1051769920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3286798 (or 3286788 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 40.

The square root of 1051769920 is about 32431.0024513582. The cubic root of 1051769920 is about 1016.9671283698.

The spelling of 1051769920 in words is "one billion, fifty-one million, seven hundred sixty-nine thousand, nine hundred twenty".