1979077144 has 16 divisors (see below), whose sum is σ = 4048112520. Its totient is φ = 899580480.

The previous prime is 1979077103. The next prime is 1979077171. The reversal of 1979077144 is 4417709791.

It is a congruent 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, 11244669 + ... + 11244844.

Almost surely, 2^1979077144 is an apocalyptic number.

It is an amenable number.

1979077144 is an abundant number, since it is smaller than the sum of its proper divisors (2069035376).

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

1979077144 is a wasteful number, since it uses less digits than its factorization.

1979077144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22489530 (or 22489526 counting only the distinct ones).

The product of its (nonzero) digits is 444528, while the sum is 49.

The square root of 1979077144 is about 44486.8198908396. The cubic root of 1979077144 is about 1255.5121149295.

The spelling of 1979077144 in words is "one billion, nine hundred seventy-nine million, seventy-seven thousand, one hundred forty-four".