1261413774 has 24 divisors (see below), whose sum is σ = 2735034120. Its totient is φ = 420168048.

The previous prime is 1261413767. The next prime is 1261413799. The reversal of 1261413774 is 4773141621.

1261413774 is a `hidden beast` number, since 1 + 2 + 614 + 1 + 37 + 7 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1132 + ... + 50240.

It is an arithmetic number, because the mean of its divisors is an integer number (113959755).

Almost surely, 2^1261413774 is an apocalyptic number.

1261413774 is an abundant number, since it is smaller than the sum of its proper divisors (1473620346).

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

1261413774 is a wasteful number, since it uses less digits than its factorization.

1261413774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50544 (or 50541 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 1261413774 is about 35516.3874007478. The cubic root of 1261413774 is about 1080.4861134696.

The spelling of 1261413774 in words is "one billion, two hundred sixty-one million, four hundred thirteen thousand, seven hundred seventy-four".