1945061090 has 32 divisors (see below), whose sum is σ = 4036694400. Its totient is φ = 660973824.

The previous prime is 1945061023. The next prime is 1945061101. The reversal of 1945061090 is 901605491.

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 1945061090.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115040 + ... + 130859.

It is an arithmetic number, because the mean of its divisors is an integer number (126146700).

Almost surely, 2^1945061090 is an apocalyptic number.

1945061090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1945061090 is an abundant number, since it is smaller than the sum of its proper divisors (2091633310).

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

1945061090 is a wasteful number, since it uses less digits than its factorization.

1945061090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246026.

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

The square root of 1945061090 is about 44102.8467335160. The cubic root of 1945061090 is about 1248.2773262066.

The spelling of 1945061090 in words is "one billion, nine hundred forty-five million, sixty-one thousand, ninety".