2137338491 has 4 divisors (see below), whose sum is σ = 2153654184. Its totient is φ = 2121022800.

The previous prime is 2137338461. The next prime is 2137338509. The reversal of 2137338491 is 1948337312.

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

It is a cyclic number.

It is not a de Polignac number, because 2137338491 - 2¹⁰ = 2137337467 is a prime.

It is a super-2 number, since 2×2137338491² = 9136431650220314162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2137338461) 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, 8157650 + ... + 8157911.

It is an arithmetic number, because the mean of its divisors is an integer number (538413546).

Almost surely, 2^2137338491 is an apocalyptic number.

2137338491 is a deficient number, since it is larger than the sum of its proper divisors (16315693).

2137338491 is a wasteful number, since it uses less digits than its factorization.

2137338491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16315692.

The product of its digits is 108864, while the sum is 41.

The square root of 2137338491 is about 46231.3583079710. The cubic root of 2137338491 is about 1288.1242877616.

The spelling of 2137338491 in words is "two billion, one hundred thirty-seven million, three hundred thirty-eight thousand, four hundred ninety-one".