1500138477 has 12 divisors (see below), whose sum is σ = 2241586620. Its totient is φ = 965606208.

The previous prime is 1500138473. The next prime is 1500138491. The reversal of 1500138477 is 7748310051.

1500138477 is a `hidden beast` number, since 1 + 50 + 0 + 138 + 477 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 309267396 + 1190871081 = 17586^2 + 34509^2 .

It is not a de Polignac number, because 1500138477 - 2² = 1500138473 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1500138473) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2873568 + ... + 2874089.

It is an arithmetic number, because the mean of its divisors is an integer number (186798885).

Almost surely, 2^1500138477 is an apocalyptic number.

It is an amenable number.

1500138477 is a deficient number, since it is larger than the sum of its proper divisors (741448143).

1500138477 is a wasteful number, since it uses less digits than its factorization.

1500138477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5747692 (or 5747689 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 1500138477 is about 38731.6211511989. The cubic root of 1500138477 is about 1144.7494673792.

The spelling of 1500138477 in words is "one billion, five hundred million, one hundred thirty-eight thousand, four hundred seventy-seven".