1373142785 has 32 divisors (see below), whose sum is σ = 2004134400. Its totient is φ = 881667072.

The previous prime is 1373142781. The next prime is 1373142791. The reversal of 1373142785 is 5872413731.

It is a cyclic number.

It is not a de Polignac number, because 1373142785 - 2² = 1373142781 is a prime.

It is a super-2 number, since 2×1373142785² = 3771042215995112450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1373142781) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 112607 + ... + 124203.

It is an arithmetic number, because the mean of its divisors is an integer number (62629200).

Almost surely, 2^1373142785 is an apocalyptic number.

It is an amenable number.

1373142785 is a deficient number, since it is larger than the sum of its proper divisors (630991615).

1373142785 is a wasteful number, since it uses less digits than its factorization.

1373142785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11825.

The product of its digits is 141120, while the sum is 41.

The square root of 1373142785 is about 37055.9412915122. The cubic root of 1373142785 is about 1111.4891640445.

The spelling of 1373142785 in words is "one billion, three hundred seventy-three million, one hundred forty-two thousand, seven hundred eighty-five".