1663465379 has 8 divisors (see below), whose sum is σ = 1677403728. Its totient is φ = 1649546080.

The previous prime is 1663465369. The next prime is 1663465393. The reversal of 1663465379 is 9735643661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1663465379 - 2²⁰ = 1662416803 is a prime.

It is a super-2 number, since 2×1663465379² = 5534234134263227282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1663465339) 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 7 ways as a sum of consecutive naturals, for example, 210569 + ... + 218325.

It is an arithmetic number, because the mean of its divisors is an integer number (209675466).

Almost surely, 2^1663465379 is an apocalyptic number.

1663465379 is a deficient number, since it is larger than the sum of its proper divisors (13938349).

1663465379 is a wasteful number, since it uses less digits than its factorization.

1663465379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9525.

The product of its digits is 2449440, while the sum is 50.

The square root of 1663465379 is about 40785.6025945431. The cubic root of 1663465379 is about 1184.8715057075.

The spelling of 1663465379 in words is "one billion, six hundred sixty-three million, four hundred sixty-five thousand, three hundred seventy-nine".