1493428898 has 8 divisors (see below), whose sum is σ = 2412462108. Its totient is φ = 689274864.

The previous prime is 1493428889. The next prime is 1493428919. The reversal of 1493428898 is 8988243941.

It can be written as a sum of positive squares in 2 ways, for example, as 1152398809 + 341030089 = 33947^2 + 18467^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28719761 + ... + 28719812.

Almost surely, 2^1493428898 is an apocalyptic number.

1493428898 is a deficient number, since it is larger than the sum of its proper divisors (919033210).

1493428898 is a wasteful number, since it uses less digits than its factorization.

1493428898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57439588.

The product of its digits is 3981312, while the sum is 56.

The square root of 1493428898 is about 38644.9077887372. The cubic root of 1493428898 is about 1143.0402325820.

The spelling of 1493428898 in words is "one billion, four hundred ninety-three million, four hundred twenty-eight thousand, eight hundred ninety-eight".