977537853 has 6 divisors (see below), whose sum is σ = 1411999134. Its totient is φ = 651691896.

The previous prime is 977537831. The next prime is 977537861. The reversal of 977537853 is 358735779.

It can be written as a sum of positive squares in only one way, i.e., 781593849 + 195944004 = 27957^2 + 13998^2 .

It is not a de Polignac number, because 977537853 - 2²⁰ = 976489277 is a prime.

It is a super-3 number, since 3×977537853³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 977537853.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (977537453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54307650 + ... + 54307667.

It is an arithmetic number, because the mean of its divisors is an integer number (235333189).

Almost surely, 2^977537853 is an apocalyptic number.

It is an amenable number.

977537853 is a deficient number, since it is larger than the sum of its proper divisors (434461281).

977537853 is a wasteful number, since it uses less digits than its factorization.

977537853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108615323 (or 108615320 counting only the distinct ones).

The product of its digits is 5556600, while the sum is 54.

The square root of 977537853 is about 31265.6017533647. The cubic root of 977537853 is about 992.4558465385.

The spelling of 977537853 in words is "nine hundred seventy-seven million, five hundred thirty-seven thousand, eight hundred fifty-three".