2193720903 has 48 divisors (see below), whose sum is σ = 3499322112. Its totient is φ = 1313280000.

The previous prime is 2193720899. The next prime is 2193720913. The reversal of 2193720903 is 3090273912.

It is not a de Polignac number, because 2193720903 - 2² = 2193720899 is a prime.

It is a super-2 number, since 2×2193720903² = 9624822800518270818, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2193720913) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3841608 + ... + 3842178.

It is an arithmetic number, because the mean of its divisors is an integer number (72902544).

Almost surely, 2^2193720903 is an apocalyptic number.

2193720903 is a deficient number, since it is larger than the sum of its proper divisors (1305601209).

2193720903 is a wasteful number, since it uses less digits than its factorization.

2193720903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 996 (or 993 counting only the distinct ones).

The product of its (nonzero) digits is 20412, while the sum is 36.

The square root of 2193720903 is about 46837.1743703653. The cubic root of 2193720903 is about 1299.3529132659.

The spelling of 2193720903 in words is "two billion, one hundred ninety-three million, seven hundred twenty thousand, nine hundred three".