2143157436 has 72 divisors (see below), whose sum is σ = 6278598144. Its totient is φ = 603701280.

The previous prime is 2143157417. The next prime is 2143157473. The reversal of 2143157436 is 6347513412.

2143157436 is a `hidden beast` number, since 21 + 4 + 31 + 574 + 36 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 2143157436.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 42000 + ... + 77783.

It is an arithmetic number, because the mean of its divisors is an integer number (87202752).

Almost surely, 2^2143157436 is an apocalyptic number.

It is an amenable number.

2143157436 is an abundant number, since it is smaller than the sum of its proper divisors (4135440708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2143157436 is a wasteful number, since it uses less digits than its factorization.

2143157436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119871 (or 119866 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 2143157436 is about 46294.2484116548. The cubic root of 2143157436 is about 1289.2922095249.

The spelling of 2143157436 in words is "two billion, one hundred forty-three million, one hundred fifty-seven thousand, four hundred thirty-six".