1301977216 has 32 divisors (see below), whose sum is σ = 2603493900. Its totient is φ = 648551424.

The previous prime is 1301977213. The next prime is 1301977217. The reversal of 1301977216 is 6127791031.

It can be written as a sum of positive squares in 2 ways, for example, as 822542400 + 479434816 = 28680^2 + 21896^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×1301977216² = 3390289341966221312, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1301977213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15526 + ... + 53338.

Almost surely, 2^1301977216 is an apocalyptic number.

1301977216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1301977216 is a deficient number, since it is larger than the sum of its proper divisors (1301516684).

1301977216 is an equidigital number, since it uses as much as digits as its factorization.

1301977216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38096 (or 38084 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 1301977216 is about 36082.9213894884. The cubic root of 1301977216 is about 1091.9459154651.

The spelling of 1301977216 in words is "one billion, three hundred one million, nine hundred seventy-seven thousand, two hundred sixteen".