1493428373 has 4 divisors (see below), whose sum is σ = 1533791340. Its totient is φ = 1453065408.

The previous prime is 1493428357. The next prime is 1493428381. The reversal of 1493428373 is 3738243941.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 660644209 + 832784164 = 25703^2 + 28858^2 .

It is a cyclic number.

It is not a de Polignac number, because 1493428373 - 2⁴ = 1493428357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1493428333) 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, 20181428 + ... + 20181501.

It is an arithmetic number, because the mean of its divisors is an integer number (383447835).

Almost surely, 2^1493428373 is an apocalyptic number.

It is an amenable number.

1493428373 is a deficient number, since it is larger than the sum of its proper divisors (40362967).

1493428373 is an equidigital number, since it uses as much as digits as its factorization.

1493428373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40362966.

The product of its digits is 435456, while the sum is 44.

The square root of 1493428373 is about 38644.9009961211. The cubic root of 1493428373 is about 1143.0400986405.

The spelling of 1493428373 in words is "one billion, four hundred ninety-three million, four hundred twenty-eight thousand, three hundred seventy-three".