2151437933 has 4 divisors (see below), whose sum is σ = 2152707420. Its totient is φ = 2150168448.

The previous prime is 2151437923. The next prime is 2151437947. The reversal of 2151437933 is 3397341512.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1250117449 + 901320484 = 35357^2 + 30022^2 .

It is a cyclic number.

It is not a de Polignac number, because 2151437933 - 2¹⁴ = 2151421549 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151437923) 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, 632198 + ... + 635591.

It is an arithmetic number, because the mean of its divisors is an integer number (538176855).

Almost surely, 2^2151437933 is an apocalyptic number.

It is an amenable number.

2151437933 is a deficient number, since it is larger than the sum of its proper divisors (1269487).

2151437933 is a wasteful number, since it uses less digits than its factorization.

2151437933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269486.

The product of its digits is 68040, while the sum is 38.

The square root of 2151437933 is about 46383.5955160874. The cubic root of 2151437933 is about 1290.9505509312.

The spelling of 2151437933 in words is "two billion, one hundred fifty-one million, four hundred thirty-seven thousand, nine hundred thirty-three".