1047157780 has 12 divisors (see below), whose sum is σ = 2199031380. Its totient is φ = 418863104.

The previous prime is 1047157717. The next prime is 1047157819. The reversal of 1047157780 is 877517401.

1047157780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 329132164 + 718025616 = 18142^2 + 26796^2 .

It is a congruent number.

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, 26178925 + ... + 26178964.

It is an arithmetic number, because the mean of its divisors is an integer number (183252615).

Almost surely, 2^1047157780 is an apocalyptic number.

1047157780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1047157780 is an abundant number, since it is smaller than the sum of its proper divisors (1151873600).

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

1047157780 is a wasteful number, since it uses less digits than its factorization.

1047157780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52357898 (or 52357896 counting only the distinct ones).

The product of its (nonzero) digits is 54880, while the sum is 40.

The square root of 1047157780 is about 32359.8173666045. The cubic root of 1047157780 is about 1015.4784417224.

The spelling of 1047157780 in words is "one billion, forty-seven million, one hundred fifty-seven thousand, seven hundred eighty".