1913448961 has 8 divisors (see below), whose sum is σ = 1936422720. Its totient is φ = 1890612048.

The previous prime is 1913448949. The next prime is 1913448973. The reversal of 1913448961 is 1698443191.

It is an interprime number because it is at equal distance from previous prime (1913448949) and next prime (1913448973).

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 1913448961 - 2⁷ = 1913448833 is a prime.

It is a super-2 number, since 2×1913448961² = 7322573852703959042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1913448931) 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, 5941 + ... + 62146.

It is an arithmetic number, because the mean of its divisors is an integer number (242052840).

Almost surely, 2^1913448961 is an apocalyptic number.

It is an amenable number.

1913448961 is a deficient number, since it is larger than the sum of its proper divisors (22973759).

1913448961 is a wasteful number, since it uses less digits than its factorization.

1913448961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68423.

The product of its digits is 186624, while the sum is 46.

The square root of 1913448961 is about 43742.9875637227. The cubic root of 1913448961 is about 1241.4778081862.

The spelling of 1913448961 in words is "one billion, nine hundred thirteen million, four hundred forty-eight thousand, nine hundred sixty-one".