1338730451 has 8 divisors (see below), whose sum is σ = 1385302800. Its totient is φ = 1292185440.

The previous prime is 1338730403. The next prime is 1338730487. The reversal of 1338730451 is 1540378331.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1338730451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1338738451) 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, 176936 + ... + 184346.

It is an arithmetic number, because the mean of its divisors is an integer number (173162850).

Almost surely, 2^1338730451 is an apocalyptic number.

1338730451 is a deficient number, since it is larger than the sum of its proper divisors (46572349).

1338730451 is an equidigital number, since it uses as much as digits as its factorization.

1338730451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13669.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 1338730451 is about 36588.6656083547. The cubic root of 1338730451 is about 1102.1254911696.

The spelling of 1338730451 in words is "one billion, three hundred thirty-eight million, seven hundred thirty thousand, four hundred fifty-one".