1945012477 has 2 divisors, whose sum is σ = 1945012478. Its totient is φ = 1945012476.

The previous prime is 1945012453. The next prime is 1945012519. The reversal of 1945012477 is 7742105491.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1779658596 + 165353881 = 42186^2 + 12859^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1945012477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1945018477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 972506238 + 972506239.

It is an arithmetic number, because the mean of its divisors is an integer number (972506239).

Almost surely, 2^1945012477 is an apocalyptic number.

It is an amenable number.

1945012477 is a deficient number, since it is larger than the sum of its proper divisors (1).

1945012477 is an equidigital number, since it uses as much as digits as its factorization.

1945012477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 1945012477 is about 44102.2955978484. The cubic root of 1945012477 is about 1248.2669267027.

The spelling of 1945012477 in words is "one billion, nine hundred forty-five million, twelve thousand, four hundred seventy-seven".