2137509733 has 4 divisors (see below), whose sum is σ = 2139404140. Its totient is φ = 2135615328.

The previous prime is 2137509713. The next prime is 2137509749. The reversal of 2137509733 is 3379057312.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 547653604 + 1589856129 = 23402^2 + 39873^2 .

It is a cyclic number.

It is not a de Polignac number, because 2137509733 - 2⁵ = 2137509701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2137509713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 945510 + ... + 947767.

It is an arithmetic number, because the mean of its divisors is an integer number (534851035).

Almost surely, 2^2137509733 is an apocalyptic number.

It is an amenable number.

2137509733 is a deficient number, since it is larger than the sum of its proper divisors (1894407).

2137509733 is a wasteful number, since it uses less digits than its factorization.

2137509733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1894406.

The product of its (nonzero) digits is 119070, while the sum is 40.

The square root of 2137509733 is about 46233.2102822203. The cubic root of 2137509733 is about 1288.1586880355.

The spelling of 2137509733 in words is "two billion, one hundred thirty-seven million, five hundred nine thousand, seven hundred thirty-three".