1500723945 has 24 divisors (see below), whose sum is σ = 2972863296. Its totient is φ = 686045088.

The previous prime is 1500723937. The next prime is 1500723967. The reversal of 1500723945 is 5493270051.

It is not a de Polignac number, because 1500723945 - 2³ = 1500723937 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2381787 + ... + 2382416.

It is an arithmetic number, because the mean of its divisors is an integer number (123869304).

Almost surely, 2^1500723945 is an apocalyptic number.

1500723945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1500723945 is a deficient number, since it is larger than the sum of its proper divisors (1472139351).

1500723945 is a wasteful number, since it uses less digits than its factorization.

1500723945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4764221 (or 4764218 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 1500723945 is about 38739.1784244323. The cubic root of 1500723945 is about 1144.8983707462.

Adding to 1500723945 its reverse (5493270051), we get a palindrome (6993993996).

The spelling of 1500723945 in words is "one billion, five hundred million, seven hundred twenty-three thousand, nine hundred forty-five".