1461720469 has 8 divisors (see below), whose sum is σ = 1688404608. Its totient is φ = 1250669760.

The previous prime is 1461720461. The next prime is 1461720487. The reversal of 1461720469 is 9640271641.

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 1461720469 - 2³ = 1461720461 is a prime.

It is a super-2 number, since 2×1461720469² = 4273253458987159922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1461720461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3908157 + ... + 3908530.

It is an arithmetic number, because the mean of its divisors is an integer number (211050576).

Almost surely, 2^1461720469 is an apocalyptic number.

It is an amenable number.

1461720469 is a deficient number, since it is larger than the sum of its proper divisors (226684139).

1461720469 is a wasteful number, since it uses less digits than its factorization.

1461720469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7816715.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 1461720469 is about 38232.4530863506. The cubic root of 1461720469 is about 1134.8926312687.

The spelling of 1461720469 in words is "one billion, four hundred sixty-one million, seven hundred twenty thousand, four hundred sixty-nine".