1199425980 has 24 divisors (see below), whose sum is σ = 3358392912. Its totient is φ = 319846912.

The previous prime is 1199425979. The next prime is 1199425999. The reversal of 1199425980 is 895249911.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9995157 + ... + 9995276.

It is an arithmetic number, because the mean of its divisors is an integer number (139933038).

Almost surely, 2^1199425980 is an apocalyptic number.

1199425980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1199425980 is an abundant number, since it is smaller than the sum of its proper divisors (2158966932).

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

1199425980 is a wasteful number, since it uses less digits than its factorization.

1199425980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19990445 (or 19990443 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 48.

The square root of 1199425980 is about 34632.7298952884. The cubic root of 1199425980 is about 1062.4891012492.

The spelling of 1199425980 in words is "one billion, one hundred ninety-nine million, four hundred twenty-five thousand, nine hundred eighty".