1979264990 has 16 divisors (see below), whose sum is σ = 3584536848. Its totient is φ = 786848256.

The previous prime is 1979264981. The next prime is 1979265011. The reversal of 1979264990 is 994629791.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 605507 + ... + 608766.

It is an arithmetic number, because the mean of its divisors is an integer number (224033553).

Almost surely, 2^1979264990 is an apocalyptic number.

1979264990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1979264990 is a deficient number, since it is larger than the sum of its proper divisors (1605271858).

1979264990 is a wasteful number, since it uses less digits than its factorization.

1979264990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214443.

The product of its (nonzero) digits is 2204496, while the sum is 56.

The square root of 1979264990 is about 44488.9310952736. The cubic root of 1979264990 is about 1255.5518363838.

The spelling of 1979264990 in words is "one billion, nine hundred seventy-nine million, two hundred sixty-four thousand, nine hundred ninety".