2151651652 has 6 divisors (see below), whose sum is σ = 3765390398. Its totient is φ = 1075825824.

The previous prime is 2151651647. The next prime is 2151651661. The reversal of 2151651652 is 2561561512.

It can be written as a sum of positive squares in only one way, i.e., 1889988676 + 261662976 = 43474^2 + 16176^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 268956453 + ... + 268956460.

Almost surely, 2^2151651652 is an apocalyptic number.

It is an amenable number.

2151651652 is a deficient number, since it is larger than the sum of its proper divisors (1613738746).

2151651652 is a wasteful number, since it uses less digits than its factorization.

2151651652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 537912917 (or 537912915 counting only the distinct ones).

The product of its digits is 18000, while the sum is 34.

The square root of 2151651652 is about 46385.8992798458. The cubic root of 2151651652 is about 1290.9932962228.

The spelling of 2151651652 in words is "two billion, one hundred fifty-one million, six hundred fifty-one thousand, six hundred fifty-two".