1432639980 has 96 divisors (see below), whose sum is σ = 4719314880. Its totient is φ = 359562240.

The previous prime is 1432639937. The next prime is 1432639981. The reversal of 1432639980 is 899362341.

It is a happy number.

1432639980 is a `hidden beast` number, since 1 + 4 + 3 + 2 + 639 + 9 + 8 + 0 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (1432639981) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 68851 + ... + 87210.

It is an arithmetic number, because the mean of its divisors is an integer number (49159530).

Almost surely, 2^1432639980 is an apocalyptic number.

1432639980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1432639980 is an abundant number, since it is smaller than the sum of its proper divisors (3286674900).

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

1432639980 is a wasteful number, since it uses less digits than its factorization.

1432639980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156096 (or 156088 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 1432639980 is about 37850.2309107884. The cubic root of 1432639980 is about 1127.3160464425.

The spelling of 1432639980 in words is "one billion, four hundred thirty-two million, six hundred thirty-nine thousand, nine hundred eighty".