11919137 has 12 divisors (see below), whose sum is σ = 12723876. Its totient is φ = 11162880.

The previous prime is 11919109. The next prime is 11919139. The reversal of 11919137 is 73191911.

It can be written as a sum of positive squares in 2 ways, for example, as 8014561 + 3904576 = 2831^2 + 1976^2 .

It is not a de Polignac number, because 11919137 - 2¹² = 11915041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11919139) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49337 + ... + 49577.

It is an arithmetic number, because the mean of its divisors is an integer number (1060323).

Almost surely, 2^11919137 is an apocalyptic number.

It is an amenable number.

11919137 is a deficient number, since it is larger than the sum of its proper divisors (804739).

11919137 is a wasteful number, since it uses less digits than its factorization.

11919137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416 (or 397 counting only the distinct ones).

The product of its digits is 1701, while the sum is 32.

The square root of 11919137 is about 3452.4103174449. The cubic root of 11919137 is about 228.4274389066.

The spelling of 11919137 in words is "eleven million, nine hundred nineteen thousand, one hundred thirty-seven".