1137944389 has 16 divisors (see below), whose sum is σ = 1217665152. Its totient is φ = 1060855488.

The previous prime is 1137944383. The next prime is 1137944399. The reversal of 1137944389 is 9834497311.

It is a cyclic number.

It is not a de Polignac number, because 1137944389 - 2⁷ = 1137944261 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 (1137944383) 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, 605319 + ... + 607195.

It is an arithmetic number, because the mean of its divisors is an integer number (76104072).

Almost surely, 2^1137944389 is an apocalyptic number.

It is an amenable number.

1137944389 is a deficient number, since it is larger than the sum of its proper divisors (79720763).

1137944389 is a wasteful number, since it uses less digits than its factorization.

1137944389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2556.

The product of its digits is 653184, while the sum is 49.

The square root of 1137944389 is about 33733.4313256152. The cubic root of 1137944389 is about 1044.0156597060.

The spelling of 1137944389 in words is "one billion, one hundred thirty-seven million, nine hundred forty-four thousand, three hundred eighty-nine".