1978000612 has 24 divisors (see below), whose sum is σ = 4062922304. Its totient is φ = 824802912.

The previous prime is 1978000603. The next prime is 1978000613. The reversal of 1978000612 is 2160008791.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1978000613) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 953598 + ... + 955669.

Almost surely, 2^1978000612 is an apocalyptic number.

It is an amenable number.

1978000612 is an abundant number, since it is smaller than the sum of its proper divisors (2084921692).

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

1978000612 is a wasteful number, since it uses less digits than its factorization.

1978000612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1909315 (or 1909313 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 1978000612 is about 44474.7187961880. The cubic root of 1978000612 is about 1255.2844256221.

The spelling of 1978000612 in words is "one billion, nine hundred seventy-eight million, six hundred twelve", and thus it is an aban number.