1267916361 has 16 divisors (see below), whose sum is σ = 1738598400. Its totient is φ = 821454480.

The previous prime is 1267916357. The next prime is 1267916369. The reversal of 1267916361 is 1636197621.

It is not a de Polignac number, because 1267916361 - 2² = 1267916357 is a prime.

It is a super-2 number, since 2×1267916361² = 3215223796982964642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1267916369) 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, 976 + ... + 50366.

It is an arithmetic number, because the mean of its divisors is an integer number (108662400).

Almost surely, 2^1267916361 is an apocalyptic number.

It is an amenable number.

1267916361 is a deficient number, since it is larger than the sum of its proper divisors (470682039).

1267916361 is a wasteful number, since it uses less digits than its factorization.

1267916361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49636.

The product of its digits is 81648, while the sum is 42.

The square root of 1267916361 is about 35607.8132015994. The cubic root of 1267916361 is about 1082.3395672757.

The spelling of 1267916361 in words is "one billion, two hundred sixty-seven million, nine hundred sixteen thousand, three hundred sixty-one".