1979373858 has 64 divisors (see below), whose sum is σ = 4953719808. Its totient is φ = 512233920.

The previous prime is 1979373857. The next prime is 1979373863. The reversal of 1979373858 is 8583739791.

It is a super-3 number, since 3×1979373858³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1979373857) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 120241 + ... + 135707.

It is an arithmetic number, because the mean of its divisors is an integer number (77401872).

Almost surely, 2^1979373858 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1979373858, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2476859904).

1979373858 is an abundant number, since it is smaller than the sum of its proper divisors (2974345950).

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

1979373858 is a wasteful number, since it uses less digits than its factorization.

1979373858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15767.

The product of its digits is 11430720, while the sum is 60.

The square root of 1979373858 is about 44490.1546187468. The cubic root of 1979373858 is about 1255.5748561937.

The spelling of 1979373858 in words is "one billion, nine hundred seventy-nine million, three hundred seventy-three thousand, eight hundred fifty-eight".