2151414749 has 4 divisors (see below), whose sum is σ = 2346997920. Its totient is φ = 1955831580.

The previous prime is 2151414721. The next prime is 2151414791. The reversal of 2151414749 is 9474141512.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2151414749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151414799) 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 3 ways as a sum of consecutive naturals, for example, 97791569 + ... + 97791590.

It is an arithmetic number, because the mean of its divisors is an integer number (586749480).

Almost surely, 2^2151414749 is an apocalyptic number.

It is an amenable number.

2151414749 is a deficient number, since it is larger than the sum of its proper divisors (195583171).

2151414749 is a wasteful number, since it uses less digits than its factorization.

2151414749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195583170.

The product of its digits is 40320, while the sum is 38.

The square root of 2151414749 is about 46383.3455994714. The cubic root of 2151414749 is about 1290.9459137992.

It can be divided in two parts, 21514 and 14749, that added together give a palindrome (36263).

The spelling of 2151414749 in words is "two billion, one hundred fifty-one million, four hundred fourteen thousand, seven hundred forty-nine".