1453681538 has 8 divisors (see below), whose sum is σ = 2181107088. Its totient is φ = 726645844.

The previous prime is 1453681529. The next prime is 1453681547. The reversal of 1453681538 is 8351863541.

It is an interprime number because it is at equal distance from previous prime (1453681529) and next prime (1453681547).

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

It is a super-2 number, since 2×1453681538² = 4226380027844090888, which contains 22 as substring.

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, 87956 + ... + 103167.

It is an arithmetic number, because the mean of its divisors is an integer number (272638386).

Almost surely, 2^1453681538 is an apocalyptic number.

1453681538 is a deficient number, since it is larger than the sum of its proper divisors (727425550).

1453681538 is a wasteful number, since it uses less digits than its factorization.

1453681538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194928.

The product of its digits is 345600, while the sum is 44.

The square root of 1453681538 is about 38127.1758461075. The cubic root of 1453681538 is about 1132.8083066605.

The spelling of 1453681538 in words is "one billion, four hundred fifty-three million, six hundred eighty-one thousand, five hundred thirty-eight".