2139499891386 has 96 divisors (see below), whose sum is σ = 5647703600448. Its totient is φ = 598461488640.

The previous prime is 2139499891381. The next prime is 2139499891391. The reversal of 2139499891386 is 6831989949312.

2139499891386 is a `hidden beast` number, since 2 + 1 + 39 + 49 + 98 + 91 + 386 = 666.

It is an interprime number because it is at equal distance from previous prime (2139499891381) and next prime (2139499891391).

It is not an unprimeable number, because it can be changed into a prime (2139499891381) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15323031 + ... + 15462026.

It is an arithmetic number, because the mean of its divisors is an integer number (58830245838).

Almost surely, 2^{2139499891386} is an apocalyptic number.

2139499891386 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2139499891386 is an abundant number, since it is smaller than the sum of its proper divisors (3508203709062).

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

2139499891386 is a wasteful number, since it uses less digits than its factorization.

2139499891386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30785098 (or 30785086 counting only the distinct ones).

The product of its digits is 181398528, while the sum is 72.

The spelling of 2139499891386 in words is "two trillion, one hundred thirty-nine billion, four hundred ninety-nine million, eight hundred ninety-one thousand, three hundred eighty-six".