1500642450 has 60 divisors (see below), whose sum is σ = 4169574090. Its totient is φ = 400170240.

The previous prime is 1500642449. The next prime is 1500642457. The reversal of 1500642450 is 542460051.

1500642450 is a `hidden beast` number, since 15 + 0 + 0 + 642 + 4 + 5 + 0 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 1032915321 + 467727129 = 32139^2 + 21627^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1500642457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 181215 + ... + 189314.

Almost surely, 2^1500642450 is an apocalyptic number.

1500642450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1500642450 is an abundant number, since it is smaller than the sum of its proper divisors (2668931640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1500642450 is a wasteful number, since it uses less digits than its factorization.

1500642450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370553 (or 370539 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 1500642450 is about 38738.1265680208. The cubic root of 1500642450 is about 1144.8776462636.

The spelling of 1500642450 in words is "one billion, five hundred million, six hundred forty-two thousand, four hundred fifty".