980155780 has 12 divisors (see below), whose sum is σ = 2058327180. Its totient is φ = 392062304.

The previous prime is 980155763. The next prime is 980155807. The reversal of 980155780 is 87551089.

It can be written as a sum of positive squares in 2 ways, for example, as 538147204 + 442008576 = 23198^2 + 21024^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24503875 + ... + 24503914.

It is an arithmetic number, because the mean of its divisors is an integer number (171527265).

Almost surely, 2^980155780 is an apocalyptic number.

It is an amenable number.

980155780 is an abundant number, since it is smaller than the sum of its proper divisors (1078171400).

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

980155780 is a wasteful number, since it uses less digits than its factorization.

980155780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49007798 (or 49007796 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 43.

The square root of 980155780 is about 31307.4396909105. The cubic root of 980155780 is about 993.3410163613.

The spelling of 980155780 in words is "nine hundred eighty million, one hundred fifty-five thousand, seven hundred eighty".