1373001687146 has 4 divisors (see below), whose sum is σ = 2059502530722. Its totient is φ = 686500843572.

The previous prime is 1373001687139. The next prime is 1373001687149. The reversal of 1373001687146 is 6417861003731.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1348127665921 + 24874021225 = 1161089^2 + 157715^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1373001687146.

It is not an unprimeable number, because it can be changed into a prime (1373001687149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 343250421785 + ... + 343250421788.

Almost surely, 2^{1373001687146} is an apocalyptic number.

1373001687146 is a deficient number, since it is larger than the sum of its proper divisors (686500843576).

1373001687146 is an equidigital number, since it uses as much as digits as its factorization.

1373001687146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 686500843575.

The product of its (nonzero) digits is 508032, while the sum is 47.

The spelling of 1373001687146 in words is "one trillion, three hundred seventy-three billion, one million, six hundred eighty-seven thousand, one hundred forty-six".