1298631600 has 360 divisors, whose sum is σ = 5331012960. Its totient is φ = 286433280.

The previous prime is 1298631583. The next prime is 1298631601. The reversal of 1298631600 is 61368921.

1298631600 is a `hidden beast` number, since 12 + 9 + 8 + 6 + 31 + 600 = 666.

1298631600 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 (360).

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

It is not an unprimeable number, because it can be changed into a prime (1298631601) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 729912 + ... + 731688.

Almost surely, 2^1298631600 is an apocalyptic number.

1298631600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1298631600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2665506480).

1298631600 is an abundant number, since it is smaller than the sum of its proper divisors (4032381360).

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

1298631600 is a wasteful number, since it uses less digits than its factorization.

1298631600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1837 (or 1823 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 1298631600 is about 36036.5314646124. The cubic root of 1298631600 is about 1091.0098096402.

The spelling of 1298631600 in words is "one billion, two hundred ninety-eight million, six hundred thirty-one thousand, six hundred".