1372641145 has 4 divisors (see below), whose sum is σ = 1647169380. Its totient is φ = 1098112912.

The previous prime is 1372641143. The next prime is 1372641181. The reversal of 1372641145 is 5411462731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5411462731 = 193 ⋅28038667.

It can be written as a sum of positive squares in 2 ways, for example, as 168065296 + 1204575849 = 12964^2 + 34707^2 .

It is a cyclic number.

It is not a de Polignac number, because 1372641145 - 2¹ = 1372641143 is a prime.

It is a super-2 number, since 2×1372641145² = 3768287425893822050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1372641145.

It is not an unprimeable number, because it can be changed into a prime (1372641143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137264110 + ... + 137264119.

It is an arithmetic number, because the mean of its divisors is an integer number (411792345).

Almost surely, 2^1372641145 is an apocalyptic number.

It is an amenable number.

1372641145 is a deficient number, since it is larger than the sum of its proper divisors (274528235).

1372641145 is an equidigital number, since it uses as much as digits as its factorization.

1372641145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274528234.

The product of its digits is 20160, while the sum is 34.

The square root of 1372641145 is about 37049.1719880485. The cubic root of 1372641145 is about 1111.3537968801.

The spelling of 1372641145 in words is "one billion, three hundred seventy-two million, six hundred forty-one thousand, one hundred forty-five".