2139492733 has 6 divisors (see below), whose sum is σ = 2488797726. Its totient is φ = 1833850872.

The previous prime is 2139492731. The next prime is 2139492757. The reversal of 2139492733 is 3372949312.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1642113529 + 497379204 = 40523^2 + 22302^2 .

It is not a de Polignac number, because 2139492733 - 2¹ = 2139492731 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2139492733.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2139492731) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21831510 + ... + 21831607.

It is an arithmetic number, because the mean of its divisors is an integer number (414799621).

Almost surely, 2^2139492733 is an apocalyptic number.

It is an amenable number.

2139492733 is a deficient number, since it is larger than the sum of its proper divisors (349304993).

2139492733 is an equidigital number, since it uses as much as digits as its factorization.

2139492733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43663131 (or 43663124 counting only the distinct ones).

The product of its digits is 244944, while the sum is 43.

The square root of 2139492733 is about 46254.6509337169. The cubic root of 2139492733 is about 1288.5569129920.

The spelling of 2139492733 in words is "two billion, one hundred thirty-nine million, four hundred ninety-two thousand, seven hundred thirty-three".