2190261438 has 32 divisors (see below), whose sum is σ = 4869292320. Its totient is φ = 729780480.

The previous prime is 2190261427. The next prime is 2190261439. The reversal of 2190261438 is 8341620912.

2190261438 is a `hidden beast` number, since 2 + 1 + 9 + 0 + 2 + 614 + 38 = 666.

2190261438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2190261439) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 147406 + ... + 161582.

It is an arithmetic number, because the mean of its divisors is an integer number (152165385).

Almost surely, 2^2190261438 is an apocalyptic number.

2190261438 is an abundant number, since it is smaller than the sum of its proper divisors (2679030882).

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

2190261438 is a wasteful number, since it uses less digits than its factorization.

2190261438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17049 (or 17043 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 2190261438 is about 46800.2290379011. The cubic root of 2190261438 is about 1298.6695338873.

The spelling of 2190261438 in words is "two billion, one hundred ninety million, two hundred sixty-one thousand, four hundred thirty-eight".