1506861137 has 4 divisors (see below), whose sum is σ = 1507321200. Its totient is φ = 1506401076.

The previous prime is 1506861127. The next prime is 1506861157. The reversal of 1506861137 is 7311686051.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1506861137 - 2¹⁸ = 1506598993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1506861137.

It is not an unprimeable number, because it can be changed into a prime (1506861107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225083 + ... + 231680.

It is an arithmetic number, because the mean of its divisors is an integer number (376830300).

Almost surely, 2^1506861137 is an apocalyptic number.

It is an amenable number.

1506861137 is a deficient number, since it is larger than the sum of its proper divisors (460063).

1506861137 is an equidigital number, since it uses as much as digits as its factorization.

1506861137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460062.

The product of its (nonzero) digits is 30240, while the sum is 38.

The square root of 1506861137 is about 38818.3093011532. The cubic root of 1506861137 is about 1146.4569306751.

The spelling of 1506861137 in words is "one billion, five hundred six million, eight hundred sixty-one thousand, one hundred thirty-seven".