162137409 has 16 divisors (see below), whose sum is σ = 255037440. Its totient is φ = 89660880.

The previous prime is 162137399. The next prime is 162137473. The reversal of 162137409 is 904731261.

It is not a de Polignac number, because 162137409 - 2¹³ = 162129217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 162137409.

It is not an unprimeable number, because it can be changed into a prime (162137009) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123879 + ... + 125180.

It is an arithmetic number, because the mean of its divisors is an integer number (15939840).

Almost surely, 2^162137409 is an apocalyptic number.

It is an amenable number.

162137409 is a deficient number, since it is larger than the sum of its proper divisors (92900031).

162137409 is a wasteful number, since it uses less digits than its factorization.

162137409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249100.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 162137409 is about 12733.3188525223. The cubic root of 162137409 is about 545.2902631343.

The spelling of 162137409 in words is "one hundred sixty-two million, one hundred thirty-seven thousand, four hundred nine".