1452721198 has 8 divisors (see below), whose sum is σ = 2179251360. Its totient is φ = 726304080.

The previous prime is 1452721189. The next prime is 1452721201. The reversal of 1452721198 is 8911272541.

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

It is a super-2 number, since 2×1452721198² = 4220797758237110408, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1452721198.

It is a congruent number.

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, 21138 + ... + 57898.

It is an arithmetic number, because the mean of its divisors is an integer number (272406420).

Almost surely, 2^1452721198 is an apocalyptic number.

1452721198 is a deficient number, since it is larger than the sum of its proper divisors (726530162).

1452721198 is a wasteful number, since it uses less digits than its factorization.

1452721198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56522.

The product of its digits is 40320, while the sum is 40.

The square root of 1452721198 is about 38114.5798612552. The cubic root of 1452721198 is about 1132.5587974547.

The spelling of 1452721198 in words is "one billion, four hundred fifty-two million, seven hundred twenty-one thousand, one hundred ninety-eight".