1949355090 has 48 divisors (see below), whose sum is σ = 5113202328. Its totient is φ = 515225088.

The previous prime is 1949355049. The next prime is 1949355119. The reversal of 1949355090 is 905539491.

It is a happy number.

1949355090 is a `hidden beast` number, since 1 + 9 + 4 + 9 + 3 + 550 + 90 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1272991041 + 676364049 = 35679^2 + 26007^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85669 + ... + 106008.

Almost surely, 2^1949355090 is an apocalyptic number.

1949355090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1949355090 is an abundant number, since it is smaller than the sum of its proper divisors (3163847238).

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

1949355090 is a wasteful number, since it uses less digits than its factorization.

1949355090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191803 (or 191800 counting only the distinct ones).

The product of its (nonzero) digits is 218700, while the sum is 45.

The square root of 1949355090 is about 44151.5015599696. The cubic root of 1949355090 is about 1249.1952345265.

The spelling of 1949355090 in words is "one billion, nine hundred forty-nine million, three hundred fifty-five thousand, ninety".