2165146051 has 16 divisors (see below), whose sum is σ = 2270112768. Its totient is φ = 2062562400.

The previous prime is 2165146043. The next prime is 2165146111. The reversal of 2165146051 is 1506415612.

It is a cyclic number.

It is not a de Polignac number, because 2165146051 - 2³ = 2165146043 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2165146031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 788541 + ... + 791281.

It is an arithmetic number, because the mean of its divisors is an integer number (141882048).

Almost surely, 2^2165146051 is an apocalyptic number.

2165146051 is a deficient number, since it is larger than the sum of its proper divisors (104966717).

2165146051 is a wasteful number, since it uses less digits than its factorization.

2165146051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3162.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 2165146051 is about 46531.1299132097. The cubic root of 2165146051 is about 1293.6865582682.

The spelling of 2165146051 in words is "two billion, one hundred sixty-five million, one hundred forty-six thousand, fifty-one".