1506047973 has 4 divisors (see below), whose sum is σ = 2008063968. Its totient is φ = 1004031980.

The previous prime is 1506047951. The next prime is 1506047993. The reversal of 1506047973 is 3797406051.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3797406051 = 3 ⋅1265802017.

It is a cyclic number.

It is not a de Polignac number, because 1506047973 - 2¹⁶ = 1505982437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1506047993) 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, 251007993 + ... + 251007998.

It is an arithmetic number, because the mean of its divisors is an integer number (502015992).

Almost surely, 2^1506047973 is an apocalyptic number.

It is an amenable number.

1506047973 is a deficient number, since it is larger than the sum of its proper divisors (502015995).

1506047973 is an equidigital number, since it uses as much as digits as its factorization.

1506047973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 502015994.

The product of its (nonzero) digits is 158760, while the sum is 42.

The square root of 1506047973 is about 38807.8339127553. The cubic root of 1506047973 is about 1146.2506685262.

The spelling of 1506047973 in words is "one billion, five hundred six million, forty-seven thousand, nine hundred seventy-three".