1945046790 has 64 divisors (see below), whose sum is σ = 5197348800. Its totient is φ = 517623552.

The previous prime is 1945046759. The next prime is 1945046833. The reversal of 1945046790 is 976405491.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 130354 + ... + 144506.

It is an arithmetic number, because the mean of its divisors is an integer number (81208575).

Almost surely, 2^1945046790 is an apocalyptic number.

1945046790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1945046790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2598674400).

1945046790 is an abundant number, since it is smaller than the sum of its proper divisors (3252302010).

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

1945046790 is a wasteful number, since it uses less digits than its factorization.

1945046790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14678 (or 14672 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 1945046790 is about 44102.6846121639. The cubic root of 1945046790 is about 1248.2742671065.

The spelling of 1945046790 in words is "one billion, nine hundred forty-five million, forty-six thousand, seven hundred ninety".