1383402946 has 8 divisors (see below), whose sum is σ = 2075263164. Its totient is φ = 691648560.

The previous prime is 1383402907. The next prime is 1383402947. The reversal of 1383402946 is 6492043831.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1379751025 + 3651921 = 37145^2 + 1911^2 .

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

It is a super-2 number, since 2×1383402946² = 3827607422002957832, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1383402899 and 1383402908.

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 3 ways as a sum of consecutive naturals, for example, 32496 + ... + 61828.

Almost surely, 2^1383402946 is an apocalyptic number.

1383402946 is a deficient number, since it is larger than the sum of its proper divisors (691860218).

1383402946 is a wasteful number, since it uses less digits than its factorization.

1383402946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52916.

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 1383402946 is about 37194.1251543843. The cubic root of 1383402946 is about 1114.2506567334.

The spelling of 1383402946 in words is "one billion, three hundred eighty-three million, four hundred two thousand, nine hundred forty-six".