1679988534 has 16 divisors (see below), whose sum is σ = 3839973888. Its totient is φ = 479996712.

The previous prime is 1679988533. The next prime is 1679988547. The reversal of 1679988534 is 4358899761.

It is a super-2 number, since 2×1679988534² = 5644722948742938312, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1679988533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19999822 + ... + 19999905.

It is an arithmetic number, because the mean of its divisors is an integer number (239998368).

Almost surely, 2^1679988534 is an apocalyptic number.

1679988534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1679988534 is an abundant number, since it is smaller than the sum of its proper divisors (2159985354).

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

1679988534 is a wasteful number, since it uses less digits than its factorization.

1679988534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39999739.

The product of its digits is 13063680, while the sum is 60.

The square root of 1679988534 is about 40987.6631927218. The cubic root of 1679988534 is about 1188.7816860620.

The spelling of 1679988534 in words is "one billion, six hundred seventy-nine million, nine hundred eighty-eight thousand, five hundred thirty-four".