6920139546 has 24 divisors (see below), whose sum is σ = 15038946624. Its totient is φ = 2299742280.

The previous prime is 6920139539. The next prime is 6920139547. The reversal of 6920139546 is 6459310296.

6920139546 is a `hidden beast` number, since 6 + 92 + 0 + 13 + 9 + 546 = 666.

It is a super-2 number, since 2×6920139546² = 95776662672226172232, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6920139547) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 574786 + ... + 586701.

It is an arithmetic number, because the mean of its divisors is an integer number (626622776).

Almost surely, 2^6920139546 is an apocalyptic number.

6920139546 is an abundant number, since it is smaller than the sum of its proper divisors (8118807078).

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

6920139546 is a wasteful number, since it uses less digits than its factorization.

6920139546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161826 (or 1161823 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The square root of 6920139546 is about 83187.3761216208. The cubic root of 6920139546 is about 1905.6286961234.

The spelling of 6920139546 in words is "six billion, nine hundred twenty million, one hundred thirty-nine thousand, five hundred forty-six".