1979516700 has 162 divisors, whose sum is σ = 7217855736. Its totient is φ = 452450880.

The previous prime is 1979516677. The next prime is 1979516723. The reversal of 1979516700 is 76159791.

It is an interprime number because it is at equal distance from previous prime (1979516677) and next prime (1979516723).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 21657 + ... + 66543.

Almost surely, 2^1979516700 is an apocalyptic number.

1979516700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1979516700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3608927868).

1979516700 is an abundant number, since it is smaller than the sum of its proper divisors (5238339036).

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

1979516700 is a wasteful number, since it uses less digits than its factorization.

1979516700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44921 (or 44904 counting only the distinct ones).

The product of its (nonzero) digits is 119070, while the sum is 45.

The square root of 1979516700 is about 44491.7599112465. The cubic root of 1979516700 is about 1255.6050584230.

The spelling of 1979516700 in words is "one billion, nine hundred seventy-nine million, five hundred sixteen thousand, seven hundred".