1145677780 has 24 divisors (see below), whose sum is σ = 2590994952. Its totient is φ = 423019392.

The previous prime is 1145677769. The next prime is 1145677807. The reversal of 1145677780 is 877765411.

It can be written as a sum of positive squares in 4 ways, for example, as 85784644 + 1059893136 = 9262^2 + 32556^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1145677780.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2202967 + ... + 2203486.

It is an arithmetic number, because the mean of its divisors is an integer number (107958123).

Almost surely, 2^1145677780 is an apocalyptic number.

1145677780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1145677780 is an abundant number, since it is smaller than the sum of its proper divisors (1445317172).

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

1145677780 is a wasteful number, since it uses less digits than its factorization.

1145677780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4406475 (or 4406473 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 46.

The square root of 1145677780 is about 33847.8622663234. The cubic root of 1145677780 is about 1046.3753416339.

The spelling of 1145677780 in words is "one billion, one hundred forty-five million, six hundred seventy-seven thousand, seven hundred eighty".