1130761978 has 4 divisors (see below), whose sum is σ = 1696142970. Its totient is φ = 565380988.

The previous prime is 1130761909. The next prime is 1130761981. The reversal of 1130761978 is 8791670311.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1043096209 + 87665769 = 32297^2 + 9363^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282690493 + ... + 282690496.

Almost surely, 2^1130761978 is an apocalyptic number.

1130761978 is a deficient number, since it is larger than the sum of its proper divisors (565380992).

1130761978 is an equidigital number, since it uses as much as digits as its factorization.

1130761978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565380991.

The product of its (nonzero) digits is 63504, while the sum is 43.

The square root of 1130761978 is about 33626.8044571589. The cubic root of 1130761978 is about 1041.8145031037.

The spelling of 1130761978 in words is "one billion, one hundred thirty million, seven hundred sixty-one thousand, nine hundred seventy-eight".