1145627980 has 48 divisors (see below), whose sum is σ = 2784337920. Its totient is φ = 387811008.

The previous prime is 1145627969. The next prime is 1145627981. The reversal of 1145627980 is 897265411.

It is not an unprimeable number, because it can be changed into a prime (1145627981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40732 + ... + 62851.

It is an arithmetic number, because the mean of its divisors is an integer number (58007040).

Almost surely, 2^1145627980 is an apocalyptic number.

1145627980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1145627980 is an abundant number, since it is smaller than the sum of its proper divisors (1638709940).

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

1145627980 is a wasteful number, since it uses less digits than its factorization.

1145627980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103678 (or 103676 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 1145627980 is about 33847.1266136433. The cubic root of 1145627980 is about 1046.3601802311.

The spelling of 1145627980 in words is "one billion, one hundred forty-five million, six hundred twenty-seven thousand, nine hundred eighty".