1072618978 has 8 divisors (see below), whose sum is σ = 1703571372. Its totient is φ = 504761856.

The previous prime is 1072618957. The next prime is 1072619021. The reversal of 1072618978 is 8798162701.

It can be written as a sum of positive squares in 2 ways, for example, as 1067524929 + 5094049 = 32673^2 + 2257^2 .

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

It is a super-2 number, since 2×1072618978² = 2301022943931528968, which contains 22 as substring.

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, 15773775 + ... + 15773842.

Almost surely, 2^1072618978 is an apocalyptic number.

1072618978 is a deficient number, since it is larger than the sum of its proper divisors (630952394).

1072618978 is a wasteful number, since it uses less digits than its factorization.

1072618978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31547636.

The product of its (nonzero) digits is 338688, while the sum is 49.

The square root of 1072618978 is about 32750.8622481913. The cubic root of 1072618978 is about 1023.6429323749.

The spelling of 1072618978 in words is "one billion, seventy-two million, six hundred eighteen thousand, nine hundred seventy-eight".