1900990294 has 24 divisors (see below), whose sum is σ = 3329706960. Its totient is φ = 797362896.

The previous prime is 1900990291. The next prime is 1900990327. The reversal of 1900990294 is 4920990091.

It is a super-2 number, since 2×1900990294² = 7227528195764412872, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1900990294.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1900990291) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 192 + ... + 61660.

It is an arithmetic number, because the mean of its divisors is an integer number (138737790).

Almost surely, 2^1900990294 is an apocalyptic number.

1900990294 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1900990294 is a deficient number, since it is larger than the sum of its proper divisors (1428716666).

1900990294 is an equidigital number, since it uses as much as digits as its factorization.

1900990294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61572 (or 61525 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 43.

The square root of 1900990294 is about 43600.3474068728. The cubic root of 1900990294 is about 1238.7774748602. Note that the first 3 decimals are identical.

The spelling of 1900990294 in words is "one billion, nine hundred million, nine hundred ninety thousand, two hundred ninety-four".