1383402945 has 8 divisors (see below), whose sum is σ = 2213444736. Its totient is φ = 737814896.

The previous prime is 1383402907. The next prime is 1383402947. The reversal of 1383402945 is 5492043831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1383402945 - 2⁷ = 1383402817 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1383402947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 46113417 + ... + 46113446.

It is an arithmetic number, because the mean of its divisors is an integer number (276680592).

Almost surely, 2^1383402945 is an apocalyptic number.

1383402945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1383402945 is a deficient number, since it is larger than the sum of its proper divisors (830041791).

1383402945 is an equidigital number, since it uses as much as digits as its factorization.

1383402945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92226871.

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 1383402945 is about 37194.1251409413. The cubic root of 1383402945 is about 1114.2506564649.

The spelling of 1383402945 in words is "one billion, three hundred eighty-three million, four hundred two thousand, nine hundred forty-five".