1978468108 has 12 divisors (see below), whose sum is σ = 3511084752. Its totient is φ = 975301040.

The previous prime is 1978468097. The next prime is 1978468123. The reversal of 1978468108 is 8018648791.

It is a happy 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, 3482935 + ... + 3483502.

It is an arithmetic number, because the mean of its divisors is an integer number (292590396).

Almost surely, 2^1978468108 is an apocalyptic number.

It is an amenable number.

1978468108 is a deficient number, since it is larger than the sum of its proper divisors (1532616644).

1978468108 is a wasteful number, since it uses less digits than its factorization.

1978468108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6966512 (or 6966510 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 52.

The square root of 1978468108 is about 44479.9742356040. The cubic root of 1978468108 is about 1255.3833123830.

The spelling of 1978468108 in words is "one billion, nine hundred seventy-eight million, four hundred sixty-eight thousand, one hundred eight".