1465961651 has 16 divisors (see below), whose sum is σ = 1828792320. Its totient is φ = 1141620480.

The previous prime is 1465961647. The next prime is 1465961659. The reversal of 1465961651 is 1561695641.

It is not a de Polignac number, because 1465961651 - 2² = 1465961647 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1465961659) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150590 + ... + 160028.

It is an arithmetic number, because the mean of its divisors is an integer number (114299520).

Almost surely, 2^1465961651 is an apocalyptic number.

1465961651 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1465961651 is a deficient number, since it is larger than the sum of its proper divisors (362830669).

1465961651 is a wasteful number, since it uses less digits than its factorization.

1465961651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11474.

The product of its digits is 194400, while the sum is 44.

The square root of 1465961651 is about 38287.8786432469. The cubic root of 1465961651 is about 1135.9892017236.

The spelling of 1465961651 in words is "one billion, four hundred sixty-five million, nine hundred sixty-one thousand, six hundred fifty-one".