1900093243 has 2 divisors, whose sum is σ = 1900093244. Its totient is φ = 1900093242.

The previous prime is 1900093211. The next prime is 1900093297. The reversal of 1900093243 is 3423900091.

It is a weak prime.

It is an emirp because it is prime and its reverse (3423900091) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1900093243 - 2⁵ = 1900093211 is a prime.

It is a super-2 number, since 2×1900093243² = 7220708664188514098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1900090243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 950046621 + 950046622.

It is an arithmetic number, because the mean of its divisors is an integer number (950046622).

Almost surely, 2^1900093243 is an apocalyptic number.

1900093243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1900093243 is an equidigital number, since it uses as much as digits as its factorization.

1900093243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 1900093243 is about 43590.0589928484. The cubic root of 1900093243 is about 1238.5825902228.

The spelling of 1900093243 in words is "one billion, nine hundred million, ninety-three thousand, two hundred forty-three".