977850381 has 16 divisors (see below), whose sum is σ = 1311809600. Its totient is φ = 647906688.

The previous prime is 977850361. The next prime is 977850383. The reversal of 977850381 is 183058779.

It is not a de Polignac number, because 977850381 - 2⁷ = 977850253 is a prime.

It is a super-2 number, since 2×977850381² = 1912382735243690322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 977850381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (977850383) 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, 589305 + ... + 590961.

It is an arithmetic number, because the mean of its divisors is an integer number (81988100).

Almost surely, 2^977850381 is an apocalyptic number.

It is an amenable number.

977850381 is a deficient number, since it is larger than the sum of its proper divisors (333959219).

977850381 is a wasteful number, since it uses less digits than its factorization.

977850381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2748.

The product of its (nonzero) digits is 423360, while the sum is 48.

The square root of 977850381 is about 31270.5993066970. The cubic root of 977850381 is about 992.5616010764.

The spelling of 977850381 in words is "nine hundred seventy-seven million, eight hundred fifty thousand, three hundred eighty-one".