1506994380 has 36 divisors (see below), whose sum is σ = 4571216832. Its totient is φ = 401865120.

The previous prime is 1506994337. The next prime is 1506994403. The reversal of 1506994380 is 834996051.

It is a happy number.

1506994380 is a `hidden beast` number, since 150 + 69 + 9 + 438 + 0 = 666.

1506994380 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1506994380² = 4542064122703168800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4185916 + ... + 4186275.

Almost surely, 2^1506994380 is an apocalyptic number.

1506994380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1506994380 is an abundant number, since it is smaller than the sum of its proper divisors (3064222452).

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

1506994380 is a wasteful number, since it uses less digits than its factorization.

1506994380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8372206 (or 8372201 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 1506994380 is about 38820.0255023100. The cubic root of 1506994380 is about 1146.4907211939.

The spelling of 1506994380 in words is "one billion, five hundred six million, nine hundred ninety-four thousand, three hundred eighty".