1493138946 has 32 divisors (see below), whose sum is σ = 3261299328. Its totient is φ = 452954880.

The previous prime is 1493138939. The next prime is 1493138971. The reversal of 1493138946 is 6498313941.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1493138895 and 1493138904.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129271 + ... + 140346.

It is an arithmetic number, because the mean of its divisors is an integer number (101915604).

Almost surely, 2^1493138946 is an apocalyptic number.

1493138946 is an abundant number, since it is smaller than the sum of its proper divisors (1768160382).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1493138946 is a wasteful number, since it uses less digits than its factorization.

1493138946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269706.

The product of its digits is 559872, while the sum is 48.

The square root of 1493138946 is about 38641.1561162448. The cubic root of 1493138946 is about 1142.9662533312.

The spelling of 1493138946 in words is "one billion, four hundred ninety-three million, one hundred thirty-eight thousand, nine hundred forty-six".