1481251536 has 50 divisors (see below), whose sum is σ = 4287175442. Its totient is φ = 493750080.

The previous prime is 1481251523. The next prime is 1481251537. The reversal of 1481251536 is 6351521841.

1481251536 is a `hidden beast` number, since 1 + 481 + 25 + 153 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1372257936 + 108993600 = 37044^2 + 10440^2 .

It is a super-2 number, since 2×1481251536² = 4388212225804718592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1481251536.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1481251537) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 570175 + ... + 572766.

Almost surely, 2^1481251536 is an apocalyptic number.

1481251536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1481251536 is an abundant number, since it is smaller than the sum of its proper divisors (2805923906).

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

1481251536 is a wasteful number, since it uses less digits than its factorization.

1481251536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1142961 (or 1142946 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 1481251536 is about 38487.0307506308. The cubic root of 1481251536 is about 1139.9249812130.

The spelling of 1481251536 in words is "one billion, four hundred eighty-one million, two hundred fifty-one thousand, five hundred thirty-six".