1900149650 has 48 divisors (see below), whose sum is σ = 4169495040. Its totient is φ = 630460800.

The previous prime is 1900149649. The next prime is 1900149677. The reversal of 1900149650 is 569410091.

It is a super-2 number, since 2×1900149650² = 7221137384790245000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 1900149650.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 76715 + ... + 98414.

It is an arithmetic number, because the mean of its divisors is an integer number (86864480).

Almost surely, 2^1900149650 is an apocalyptic number.

1900149650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1900149650 is an abundant number, since it is smaller than the sum of its proper divisors (2269345390).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1900149650 is a wasteful number, since it uses less digits than its factorization.

1900149650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175179 (or 175174 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 1900149650 is about 43590.7060048355. The cubic root of 1900149650 is about 1238.5948464699.

The spelling of 1900149650 in words is "one billion, nine hundred million, one hundred forty-nine thousand, six hundred fifty".