1137382861 has 4 divisors (see below), whose sum is σ = 1138447900. Its totient is φ = 1136317824.

The previous prime is 1137382859. The next prime is 1137382877. The reversal of 1137382861 is 1682837311.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1682837311 = 1831 ⋅919081.

It can be written as a sum of positive squares in 2 ways, for example, as 447322500 + 690060361 = 21150^2 + 26269^2 .

It is a cyclic number.

It is not a de Polignac number, because 1137382861 - 2¹ = 1137382859 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 (1137382801) 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, 530916 + ... + 533053.

It is an arithmetic number, because the mean of its divisors is an integer number (284611975).

Almost surely, 2^1137382861 is an apocalyptic number.

It is an amenable number.

1137382861 is a deficient number, since it is larger than the sum of its proper divisors (1065039).

1137382861 is a wasteful number, since it uses less digits than its factorization.

1137382861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1065038.

The product of its digits is 48384, while the sum is 40.

The square root of 1137382861 is about 33725.1072792956. The cubic root of 1137382861 is about 1043.8439054192.

The spelling of 1137382861 in words is "one billion, one hundred thirty-seven million, three hundred eighty-two thousand, eight hundred sixty-one".