1900249019 has 8 divisors (see below), whose sum is σ = 1924170432. Its totient is φ = 1876452480.

The previous prime is 1900248949. The next prime is 1900249027. The reversal of 1900249019 is 9109420091.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1900249019 is a prime.

It is a super-2 number, since 2×1900249019² = 7221892668420924722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1900249019.

It is not an unprimeable number, because it can be changed into a prime (1900249319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 404 + ... + 61649.

It is an arithmetic number, because the mean of its divisors is an integer number (240521304).

Almost surely, 2^1900249019 is an apocalyptic number.

1900249019 is a deficient number, since it is larger than the sum of its proper divisors (23921413).

1900249019 is a wasteful number, since it uses less digits than its factorization.

1900249019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62437.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 1900249019 is about 43591.8457856512. The cubic root of 1900249019 is about 1238.6164370125.

The spelling of 1900249019 in words is "one billion, nine hundred million, two hundred forty-nine thousand, nineteen".