1392278355 has 128 divisors (see below), whose sum is σ = 2786058240. Its totient is φ = 655050240.

The previous prime is 1392278351. The next prime is 1392278387. The reversal of 1392278355 is 5538722931.

It is not a de Polignac number, because 1392278355 - 2² = 1392278351 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

Its product of digits (453600) is a multiple of the sum of its prime factors (378).

It is a self number, because there is not a number n which added to its sum of digits gives 1392278355.

It is not an unprimeable number, because it can be changed into a prime (1392278351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 8541504 + ... + 8541666.

It is an arithmetic number, because the mean of its divisors is an integer number (21766080).

Almost surely, 2^1392278355 is an apocalyptic number.

1392278355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1392278355 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

1392278355 is a wasteful number, since it uses less digits than its factorization.

1392278355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378 (or 372 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 1392278355 is about 37313.2463744446. The cubic root of 1392278355 is about 1116.6284542752.

The spelling of 1392278355 in words is "one billion, three hundred ninety-two million, two hundred seventy-eight thousand, three hundred fifty-five".