2156703744 has 208 divisors, whose sum is σ = 6473117952. Its totient is φ = 633667584.

The previous prime is 2156703733. The next prime is 2156703749. The reversal of 2156703744 is 4473076512.

It is a tau number, because it is divible by the number of its divisors (208).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (2156703749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3673819 + ... + 3674405.

Almost surely, 2^2156703744 is an apocalyptic number.

2156703744 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2156703744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3236558976).

2156703744 is an abundant number, since it is smaller than the sum of its proper divisors (4316414208).

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

2156703744 is a wasteful number, since it uses less digits than its factorization.

2156703744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650 (or 628 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 39.

The square root of 2156703744 is about 46440.3245466696. The cubic root of 2156703744 is about 1292.0029266325.

The spelling of 2156703744 in words is "two billion, one hundred fifty-six million, seven hundred three thousand, seven hundred forty-four".