1371452638 has 8 divisors (see below), whose sum is σ = 2061270288. Its totient is φ = 684362544.

The previous prime is 1371452609. The next prime is 1371452647. The reversal of 1371452638 is 8362541731.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1371452638.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 680631 + ... + 682642.

It is an arithmetic number, because the mean of its divisors is an integer number (257658786).

Almost surely, 2^1371452638 is an apocalyptic number.

1371452638 is a deficient number, since it is larger than the sum of its proper divisors (689817650).

1371452638 is a wasteful number, since it uses less digits than its factorization.

1371452638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1363778.

The product of its digits is 120960, while the sum is 40.

The square root of 1371452638 is about 37033.1289253285. The cubic root of 1371452638 is about 1111.0329475023.

The spelling of 1371452638 in words is "one billion, three hundred seventy-one million, four hundred fifty-two thousand, six hundred thirty-eight".