1371262465 has 4 divisors (see below), whose sum is σ = 1645514964. Its totient is φ = 1097009968.

The previous prime is 1371262429. The next prime is 1371262537. The reversal of 1371262465 is 5642621731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5642621731 = 3167 ⋅1781693.

It can be written as a sum of positive squares in 2 ways, for example, as 688590081 + 682672384 = 26241^2 + 26128^2 .

It is a cyclic number.

It is not a de Polignac number, because 1371262465 - 2⁷ = 1371262337 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137126242 + ... + 137126251.

It is an arithmetic number, because the mean of its divisors is an integer number (411378741).

Almost surely, 2^1371262465 is an apocalyptic number.

It is an amenable number.

1371262465 is a deficient number, since it is larger than the sum of its proper divisors (274252499).

1371262465 is an equidigital number, since it uses as much as digits as its factorization.

1371262465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274252498.

The product of its digits is 60480, while the sum is 37.

The square root of 1371262465 is about 37030.5612298815. The cubic root of 1371262465 is about 1110.9815911935.

The spelling of 1371262465 in words is "one billion, three hundred seventy-one million, two hundred sixty-two thousand, four hundred sixty-five".