1461623690 has 8 divisors (see below), whose sum is σ = 2630922660. Its totient is φ = 584649472.

The previous prime is 1461623687. The next prime is 1461623701. The reversal of 1461623690 is 963261641.

It can be written as a sum of positive squares in 2 ways, for example, as 1452143449 + 9480241 = 38107^2 + 3079^2 .

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

It is a super-2 number, since 2×1461623690² = 4272687622338432200, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 73081175 + ... + 73081194.

Almost surely, 2^1461623690 is an apocalyptic number.

1461623690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1461623690 is a deficient number, since it is larger than the sum of its proper divisors (1169298970).

1461623690 is a wasteful number, since it uses less digits than its factorization.

1461623690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146162376.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 1461623690 is about 38231.1873998180. The cubic root of 1461623690 is about 1134.8675840269.

The spelling of 1461623690 in words is "one billion, four hundred sixty-one million, six hundred twenty-three thousand, six hundred ninety".