1137645442 has 4 divisors (see below), whose sum is σ = 1706468166. Its totient is φ = 568822720.

The previous prime is 1137645433. The next prime is 1137645449. The reversal of 1137645442 is 2445467311.

It is a Cunningham number, because it is equal to 33729²+1.

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

It can be written as a sum of positive squares in only one way, i.e., 1137645441 + 1 = 33729^2 + 1^2 .

It is not an unprimeable number, because it can be changed into a prime (1137645449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 284411359 + ... + 284411362.

Almost surely, 2^1137645442 is an apocalyptic number.

1137645442 is a deficient number, since it is larger than the sum of its proper divisors (568822724).

1137645442 is an equidigital number, since it uses as much as digits as its factorization.

1137645442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568822723.

The product of its digits is 80640, while the sum is 37.

The square root of 1137645442 is about 33729.0000148240. Note that the first 4 decimals coincide. The cubic root of 1137645442 is about 1043.9242279725.

The spelling of 1137645442 in words is "one billion, one hundred thirty-seven million, six hundred forty-five thousand, four hundred forty-two".