1940957903 has 4 divisors (see below), whose sum is σ = 1946717760. Its totient is φ = 1935198048.

The previous prime is 1940957807. The next prime is 1940957927. The reversal of 1940957903 is 3097590491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3097590491 = 5843 ⋅530137.

It is a cyclic number.

It is not a de Polignac number, because 1940957903 - 2²⁶ = 1873849039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1940957003) 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, 2879423 + ... + 2880096.

It is an arithmetic number, because the mean of its divisors is an integer number (486679440).

Almost surely, 2^1940957903 is an apocalyptic number.

1940957903 is a deficient number, since it is larger than the sum of its proper divisors (5759857).

1940957903 is an equidigital number, since it uses as much as digits as its factorization.

1940957903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5759856.

The product of its (nonzero) digits is 306180, while the sum is 47.

The square root of 1940957903 is about 44056.3037827732. The cubic root of 1940957903 is about 1247.3989440003.

The spelling of 1940957903 in words is "one billion, nine hundred forty million, nine hundred fifty-seven thousand, nine hundred three".