1954851117 has 16 divisors (see below), whose sum is σ = 2625960000. Its totient is φ = 1293507072.

The previous prime is 1954851113. The next prime is 1954851139. The reversal of 1954851117 is 7111584591.

It is not a de Polignac number, because 1954851117 - 2² = 1954851113 is a prime.

It is a super-2 number, since 2×1954851117² = 7642885779272295378, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1954851113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 586618 + ... + 589940.

It is an arithmetic number, because the mean of its divisors is an integer number (164122500).

Almost surely, 2^1954851117 is an apocalyptic number.

It is an amenable number.

1954851117 is a deficient number, since it is larger than the sum of its proper divisors (671108883).

1954851117 is a wasteful number, since it uses less digits than its factorization.

1954851117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4732.

The product of its digits is 50400, while the sum is 42.

The square root of 1954851117 is about 44213.6982958902. The cubic root of 1954851117 is about 1250.3681298670.

The spelling of 1954851117 in words is "one billion, nine hundred fifty-four million, eight hundred fifty-one thousand, one hundred seventeen".