6461900619 has 4 divisors (see below), whose sum is σ = 8615867496. Its totient is φ = 4307933744.

The previous prime is 6461900581. The next prime is 6461900633. The reversal of 6461900619 is 9160091646.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6461900619 - 2⁷ = 6461900491 is a prime.

It is a super-2 number, since 2×6461900619² = 83512319219665166322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6461900699) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1076983434 + ... + 1076983439.

It is an arithmetic number, because the mean of its divisors is an integer number (2153966874).

Almost surely, 2^6461900619 is an apocalyptic number.

6461900619 is a deficient number, since it is larger than the sum of its proper divisors (2153966877).

6461900619 is a wasteful number, since it uses less digits than its factorization.

6461900619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2153966876.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 6461900619 is about 80385.9478951390. The cubic root of 6461900619 is about 1862.6021138495.

The spelling of 6461900619 in words is "six billion, four hundred sixty-one million, nine hundred thousand, six hundred nineteen".