1267361916 has 24 divisors (see below), whose sum is σ = 3085751424. Its totient is φ = 404086320.

The previous prime is 1267361911. The next prime is 1267361923. The reversal of 1267361916 is 6191637621.

It is a super-2 number, since 2×1267361916² = 3212412452254382112, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1267361911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2295670 + ... + 2296221.

It is an arithmetic number, because the mean of its divisors is an integer number (128572976).

Almost surely, 2^1267361916 is an apocalyptic number.

It is an amenable number.

1267361916 is an abundant number, since it is smaller than the sum of its proper divisors (1818389508).

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

1267361916 is a wasteful number, since it uses less digits than its factorization.

1267361916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4591921 (or 4591919 counting only the distinct ones).

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

The square root of 1267361916 is about 35600.0269101022. The cubic root of 1267361916 is about 1082.1817794612.

The spelling of 1267361916 in words is "one billion, two hundred sixty-seven million, three hundred sixty-one thousand, nine hundred sixteen".