1372749669 has 6 divisors (see below), whose sum is σ = 1982860646. Its totient is φ = 915166440.

The previous prime is 1372749647. The next prime is 1372749689. The reversal of 1372749669 is 9669472731.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1259327169 + 113422500 = 35487^2 + 10650^2 .

It is not a de Polignac number, because 1372749669 - 2¹⁶ = 1372684133 is a prime.

It is a super-2 number, since 2×1372749669² = 3768883307479219122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1372749689) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 76263862 + ... + 76263879.

Almost surely, 2^1372749669 is an apocalyptic number.

It is an amenable number.

1372749669 is a deficient number, since it is larger than the sum of its proper divisors (610110977).

1372749669 is a wasteful number, since it uses less digits than its factorization.

1372749669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152527747 (or 152527744 counting only the distinct ones).

The product of its digits is 3429216, while the sum is 54.

The square root of 1372749669 is about 37050.6365532362. The cubic root of 1372749669 is about 1111.3830847926.

The spelling of 1372749669 in words is "one billion, three hundred seventy-two million, seven hundred forty-nine thousand, six hundred sixty-nine".