1146770978 has 8 divisors (see below), whose sum is σ = 1724447340. Its totient is φ = 571955200.

The previous prime is 1146770971. The next prime is 1146770993. The reversal of 1146770978 is 8790776411.

It can be written as a sum of positive squares in 2 ways, for example, as 720224569 + 426546409 = 26837^2 + 20653^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1146770971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 714143 + ... + 715746.

Almost surely, 2^1146770978 is an apocalyptic number.

1146770978 is a deficient number, since it is larger than the sum of its proper divisors (577676362).

1146770978 is a wasteful number, since it uses less digits than its factorization.

1146770978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1430292.

The product of its (nonzero) digits is 592704, while the sum is 50.

The square root of 1146770978 is about 33864.0071167014. The cubic root of 1146770978 is about 1046.7080505948.

The spelling of 1146770978 in words is "one billion, one hundred forty-six million, seven hundred seventy thousand, nine hundred seventy-eight".