1392746941609 has 27 divisors (see below), whose sum is σ = 1482437204157. Its totient is φ = 1308292081848.

The previous prime is 1392746941567. The next prime is 1392746941643. The reversal of 1392746941609 is 9061496472931.

The square root of 1392746941609 is 1180147.

It is a perfect power (a square), and thus also a powerful number.

It is a de Polignac number, because none of the positive numbers 2^k-1392746941609 is a prime.

It is a super-2 number, since 2×1392746941609² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1392746945609) 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 26 ways as a sum of consecutive naturals, for example, 4013679774 + ... + 4013680120.

Almost surely, 2^{1392746941609} is an apocalyptic number.

1392746941609 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1392746941609 is the 1180147-th square number.

1392746941609 is the 590074-th centered octagonal number.

It is an amenable number.

1392746941609 is a deficient number, since it is larger than the sum of its proper divisors (89690262548).

1392746941609 is an frugal number, since it uses more digits than its factorization.

1392746941609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1090 (or 545 counting only the distinct ones).

The product of its (nonzero) digits is 17635968, while the sum is 61.

The spelling of 1392746941609 in words is "one trillion, three hundred ninety-two billion, seven hundred forty-six million, nine hundred forty-one thousand, six hundred nine".