2161001472 has 88 divisors (see below), whose sum is σ = 6582758976. Its totient is φ = 617422848.

The previous prime is 2161001467. The next prime is 2161001477. The reversal of 2161001472 is 2741001612.

It is an interprime number because it is at equal distance from previous prime (2161001467) and next prime (2161001477).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (2161001477) 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, 28743 + ... + 71750.

Almost surely, 2^2161001472 is an apocalyptic number.

It is an amenable number.

2161001472 is an abundant number, since it is smaller than the sum of its proper divisors (4421757504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2161001472 is a wasteful number, since it uses less digits than its factorization.

2161001472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100523 (or 100505 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 2161001472 is about 46486.5730292092. The cubic root of 2161001472 is about 1292.8605614867.

The spelling of 2161001472 in words is "two billion, one hundred sixty-one million, one thousand, four hundred seventy-two".