1979313650 has 48 divisors (see below), whose sum is σ = 3800944224. Its totient is φ = 766375680.

The previous prime is 1979313641. The next prime is 1979313667. The reversal of 1979313650 is 563139791.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 238877 + ... + 247023.

It is an arithmetic number, because the mean of its divisors is an integer number (79186338).

Almost surely, 2^1979313650 is an apocalyptic number.

1979313650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1979313650 is a deficient number, since it is larger than the sum of its proper divisors (1821630574).

1979313650 is a wasteful number, since it uses less digits than its factorization.

1979313650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8315 (or 8310 counting only the distinct ones).

The product of its (nonzero) digits is 153090, while the sum is 44.

The square root of 1979313650 is about 44489.4779695154. The cubic root of 1979313650 is about 1255.5621254982.

The spelling of 1979313650 in words is "one billion, nine hundred seventy-nine million, three hundred thirteen thousand, six hundred fifty".