1946280945 has 64 divisors (see below), whose sum is σ = 3633624576. Its totient is φ = 871188480.

The previous prime is 1946280929. The next prime is 1946280949. The reversal of 1946280945 is 5490826491.

It is not a de Polignac number, because 1946280945 - 2⁴ = 1946280929 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1946280894 and 1946280903.

It is not an unprimeable number, because it can be changed into a prime (1946280949) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1773637 + ... + 1774733.

It is an arithmetic number, because the mean of its divisors is an integer number (56775384).

Almost surely, 2^1946280945 is an apocalyptic number.

1946280945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1946280945 is a deficient number, since it is larger than the sum of its proper divisors (1687343631).

1946280945 is a wasteful number, since it uses less digits than its factorization.

1946280945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1450.

The product of its (nonzero) digits is 622080, while the sum is 48.

The square root of 1946280945 is about 44116.6742286859. The cubic root of 1946280945 is about 1248.5382261735.

The spelling of 1946280945 in words is "one billion, nine hundred forty-six million, two hundred eighty thousand, nine hundred forty-five".