2145986955 has 48 divisors (see below), whose sum is σ = 4288789440. Its totient is φ = 972324864.

The previous prime is 2145986951. The next prime is 2145986987. The reversal of 2145986955 is 5596895412.

2145986955 is a `hidden beast` number, since 21 + 459 + 86 + 95 + 5 = 666.

It is not a de Polignac number, because 2145986955 - 2² = 2145986951 is a prime.

It is a super-2 number, since 2×2145986955² = 9210520022060344050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2145986951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5451 + ... + 65739.

It is an arithmetic number, because the mean of its divisors is an integer number (89349780).

Almost surely, 2^2145986955 is an apocalyptic number.

2145986955 is a deficient number, since it is larger than the sum of its proper divisors (2142802485).

2145986955 is a wasteful number, since it uses less digits than its factorization.

2145986955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60420 (or 60417 counting only the distinct ones).

The product of its digits is 3888000, while the sum is 54.

The square root of 2145986955 is about 46324.7984884986. The cubic root of 2145986955 is about 1289.8593591040.

The spelling of 2145986955 in words is "two billion, one hundred forty-five million, nine hundred eighty-six thousand, nine hundred fifty-five".