1457728189 has 8 divisors (see below), whose sum is σ = 1548936000. Its totient is φ = 1367126976.

The previous prime is 1457728147. The next prime is 1457728231. The reversal of 1457728189 is 9818277541.

It is an interprime number because it is at equal distance from previous prime (1457728147) and next prime (1457728231).

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 1457728189 - 2⁷ = 1457728061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1257728189) 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, 146689 + ... + 156310.

It is an arithmetic number, because the mean of its divisors is an integer number (193617000).

Almost surely, 2^1457728189 is an apocalyptic number.

It is an amenable number.

1457728189 is a deficient number, since it is larger than the sum of its proper divisors (91207811).

1457728189 is a wasteful number, since it uses less digits than its factorization.

1457728189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303299.

The product of its digits is 1128960, while the sum is 52.

The square root of 1457728189 is about 38180.2067700006. The cubic root of 1457728189 is about 1133.8584754231.

The spelling of 1457728189 in words is "one billion, four hundred fifty-seven million, seven hundred twenty-eight thousand, one hundred eighty-nine".