1945945758 has 16 divisors (see below), whose sum is σ = 3917667456. Its totient is φ = 644352600.

The previous prime is 1945945739. The next prime is 1945945769. The reversal of 1945945758 is 8575495491.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1945945698 and 1945945707.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1073016 + ... + 1074827.

It is an arithmetic number, because the mean of its divisors is an integer number (244854216).

Almost surely, 2^1945945758 is an apocalyptic number.

1945945758 is an abundant number, since it is smaller than the sum of its proper divisors (1971721698).

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

1945945758 is a wasteful number, since it uses less digits than its factorization.

1945945758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2147999.

The product of its digits is 9072000, while the sum is 57.

The square root of 1945945758 is about 44112.8751953440. The cubic root of 1945945758 is about 1248.4665479625.

The spelling of 1945945758 in words is "one billion, nine hundred forty-five million, nine hundred forty-five thousand, seven hundred fifty-eight".