1810461961 has 8 divisors (see below), whose sum is σ = 2257199424. Its totient is φ = 1410749520.

The previous prime is 1810461953. The next prime is 1810461973. The reversal of 1810461961 is 1691640181.

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 1810461961 - 2³ = 1810461953 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1810461961.

It is not an unprimeable number, because it can be changed into a prime (1810461061) 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, 11756170 + ... + 11756323.

It is an arithmetic number, because the mean of its divisors is an integer number (282149928).

Almost surely, 2^1810461961 is an apocalyptic number.

1810461961 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1810461961 is a deficient number, since it is larger than the sum of its proper divisors (446737463).

1810461961 is a wasteful number, since it uses less digits than its factorization.

1810461961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23512511.

The product of its (nonzero) digits is 10368, while the sum is 37.

The square root of 1810461961 is about 42549.5236283557. The cubic root of 1810461961 is about 1218.7925797230.

The spelling of 1810461961 in words is "one billion, eight hundred ten million, four hundred sixty-one thousand, nine hundred sixty-one".