1500409985 has 32 divisors (see below), whose sum is σ = 1870594560. Its totient is φ = 1154764800.

The previous prime is 1500409973. The next prime is 1500410011. The reversal of 1500409985 is 5899040051.

It is a happy number.

It is not a de Polignac number, because 1500409985 - 2⁴ = 1500409969 is a prime.

It is a super-3 number, since 3×1500409985³ (a number of 29 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4179236 + ... + 4179594.

It is an arithmetic number, because the mean of its divisors is an integer number (58456080).

Almost surely, 2^1500409985 is an apocalyptic number.

It is an amenable number.

1500409985 is a deficient number, since it is larger than the sum of its proper divisors (370184575).

1500409985 is a wasteful number, since it uses less digits than its factorization.

1500409985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689.

The product of its (nonzero) digits is 64800, while the sum is 41.

The square root of 1500409985 is about 38735.1259840471. The cubic root of 1500409985 is about 1144.8185254238.

The spelling of 1500409985 in words is "one billion, five hundred million, four hundred nine thousand, nine hundred eighty-five".