1461774997 has 8 divisors (see below), whose sum is σ = 1470888000. Its totient is φ = 1452680064.

The previous prime is 1461774991. The next prime is 1461775027. The reversal of 1461774997 is 7994771641.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1461774997 is a prime.

It is a super-2 number, since 2×1461774997² = 4273572283708700018, 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 (1461774991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180918 + ... + 188824.

It is an arithmetic number, because the mean of its divisors is an integer number (183861000).

Almost surely, 2^1461774997 is an apocalyptic number.

It is an amenable number.

1461774997 is a deficient number, since it is larger than the sum of its proper divisors (9113003).

1461774997 is an equidigital number, since it uses as much as digits as its factorization.

1461774997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9035.

The product of its digits is 2667168, while the sum is 55.

The square root of 1461774997 is about 38233.1661911488. The cubic root of 1461774997 is about 1134.9067430995.

The spelling of 1461774997 in words is "one billion, four hundred sixty-one million, seven hundred seventy-four thousand, nine hundred ninety-seven".