1261348392 has 16 divisors (see below), whose sum is σ = 3153371040. Its totient is φ = 420449456.

The previous prime is 1261348391. The next prime is 1261348393. The reversal of 1261348392 is 2938431621.

It is an interprime number because it is at equal distance from previous prime (1261348391) and next prime (1261348393).

It is a self number, because there is not a number n which added to its sum of digits gives 1261348392.

It is not an unprimeable number, because it can be changed into a prime (1261348391) 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, 26278068 + ... + 26278115.

It is an arithmetic number, because the mean of its divisors is an integer number (197085690).

Almost surely, 2^1261348392 is an apocalyptic number.

1261348392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1261348392 is an abundant number, since it is smaller than the sum of its proper divisors (1892022648).

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

1261348392 is a wasteful number, since it uses less digits than its factorization.

1261348392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52556192 (or 52556188 counting only the distinct ones).

The product of its digits is 62208, while the sum is 39.

The square root of 1261348392 is about 35515.4669404754. The cubic root of 1261348392 is about 1080.4674451137.

The spelling of 1261348392 in words is "one billion, two hundred sixty-one million, three hundred forty-eight thousand, three hundred ninety-two".