1900349648 has 40 divisors (see below), whose sum is σ = 3746635200. Its totient is φ = 933569280.

The previous prime is 1900349629. The next prime is 1900349669. The reversal of 1900349648 is 8469430091.

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

It is a super-2 number, since 2×1900349648² = 7222657569307447808, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1900349599 and 1900349608.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 346028 + ... + 351476.

It is an arithmetic number, because the mean of its divisors is an integer number (93665880).

Almost surely, 2^1900349648 is an apocalyptic number.

It is an amenable number.

1900349648 is a deficient number, since it is larger than the sum of its proper divisors (1846285552).

1900349648 is a wasteful number, since it uses less digits than its factorization.

1900349648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5835 (or 5829 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 1900349648 is about 43592.9999885303. Note that the first 4 decimals coincide. The cubic root of 1900349648 is about 1238.6383005564.

The spelling of 1900349648 in words is "one billion, nine hundred million, three hundred forty-nine thousand, six hundred forty-eight".