2151969268 has 12 divisors (see below), whose sum is σ = 3767468320. Its totient is φ = 1075549752.

The previous prime is 2151969257. The next prime is 2151969269. The reversal of 2151969268 is 8629691512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151969269) 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, 97458 + ... + 117481.

Almost surely, 2^2151969268 is an apocalyptic number.

It is an amenable number.

2151969268 is a deficient number, since it is larger than the sum of its proper divisors (1615499052).

2151969268 is a wasteful number, since it uses less digits than its factorization.

2151969268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217446 (or 217444 counting only the distinct ones).

The product of its digits is 466560, while the sum is 49.

The square root of 2151969268 is about 46389.3227801398. The cubic root of 2151969268 is about 1291.0568164109.

The spelling of 2151969268 in words is "two billion, one hundred fifty-one million, nine hundred sixty-nine thousand, two hundred sixty-eight".