1946145999 has 16 divisors (see below), whose sum is σ = 2966174208. Its totient is φ = 1111851552.

The previous prime is 1946145983. The next prime is 1946146129. The reversal of 1946145999 is 9995416491.

It is not a de Polignac number, because 1946145999 - 2⁴ = 1946145983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1946145919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180334 + ... + 190820.

It is an arithmetic number, because the mean of its divisors is an integer number (185385888).

Almost surely, 2^1946145999 is an apocalyptic number.

1946145999 is a deficient number, since it is larger than the sum of its proper divisors (1020028209).

1946145999 is a wasteful number, since it uses less digits than its factorization.

1946145999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19334.

The product of its digits is 3149280, while the sum is 57.

The square root of 1946145999 is about 44115.1447804493. The cubic root of 1946145999 is about 1248.5093695767.

The spelling of 1946145999 in words is "one billion, nine hundred forty-six million, one hundred forty-five thousand, nine hundred ninety-nine".