2161255414 has 8 divisors (see below), whose sum is σ = 3242277648. Its totient is φ = 1080496200.

The previous prime is 2161255409. The next prime is 2161255417. The reversal of 2161255414 is 4145521612.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2161255414² = 9342049929088622792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161255417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43737 + ... + 78964.

It is an arithmetic number, because the mean of its divisors is an integer number (405284706).

Almost surely, 2^2161255414 is an apocalyptic number.

2161255414 is a deficient number, since it is larger than the sum of its proper divisors (1081022234).

2161255414 is a wasteful number, since it uses less digits than its factorization.

2161255414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131510.

The product of its digits is 9600, while the sum is 31.

The square root of 2161255414 is about 46489.3042967950. The cubic root of 2161255414 is about 1292.9112013932.

The spelling of 2161255414 in words is "two billion, one hundred sixty-one million, two hundred fifty-five thousand, four hundred fourteen".