1955845115 has 32 divisors (see below), whose sum is σ = 2778900480. Its totient is φ = 1292989824.

The previous prime is 1955845093. The next prime is 1955845139. The reversal of 1955845115 is 5115485591.

It is not a de Polignac number, because 1955845115 - 2¹⁰ = 1955844091 is a prime.

It is a super-2 number, since 2×1955845115² = 7650660227738726450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1118672 + ... + 1120418.

It is an arithmetic number, because the mean of its divisors is an integer number (86840640).

Almost surely, 2^1955845115 is an apocalyptic number.

1955845115 is a deficient number, since it is larger than the sum of its proper divisors (823055365).

1955845115 is a wasteful number, since it uses less digits than its factorization.

1955845115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2891.

The product of its digits is 180000, while the sum is 44.

The square root of 1955845115 is about 44224.9377048742. The cubic root of 1955845115 is about 1250.5800220179.

The spelling of 1955845115 in words is "one billion, nine hundred fifty-five million, eight hundred forty-five thousand, one hundred fifteen".