1900349650 has 12 divisors (see below), whose sum is σ = 3534650442. Its totient is φ = 760139840.

The previous prime is 1900349629. The next prime is 1900349669. The reversal of 1900349650 is 569430091.

It is a Cunningham number, because it is equal to 43593²+1.

It can be written as a sum of positive squares in 3 ways, for example, as 1751338801 + 149010849 = 41849^2 + 12207^2 .

It is a super-2 number, since 2×1900349650² = 7222657584510245000, which contains 22 as substring.

1900349650 is a modest number, since divided by 349650 gives 1900 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19003447 + ... + 19003546.

Almost surely, 2^1900349650 is an apocalyptic number.

1900349650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1900349650 is a deficient number, since it is larger than the sum of its proper divisors (1634300792).

1900349650 is a wasteful number, since it uses less digits than its factorization.

1900349650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38007005 (or 38007000 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 1900349650 is about 43593.0000114697. Note that the first 4 decimals coincide. The cubic root of 1900349650 is about 1238.6383009909.

The spelling of 1900349650 in words is "one billion, nine hundred million, three hundred forty-nine thousand, six hundred fifty".