1358242646 has 4 divisors (see below), whose sum is σ = 2037363972. Its totient is φ = 679121322.

The previous prime is 1358242619. The next prime is 1358242661. The reversal of 1358242646 is 6462428531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6462428531 = 13 ⋅497109887.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339560660 + ... + 339560663.

It is an arithmetic number, because the mean of its divisors is an integer number (509340993).

Almost surely, 2^1358242646 is an apocalyptic number.

1358242646 is a deficient number, since it is larger than the sum of its proper divisors (679121326).

1358242646 is an equidigital number, since it uses as much as digits as its factorization.

1358242646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679121325.

The product of its digits is 276480, while the sum is 41.

The square root of 1358242646 is about 36854.3436517326. The cubic root of 1358242646 is about 1107.4542328819.

The spelling of 1358242646 in words is "one billion, three hundred fifty-eight million, two hundred forty-two thousand, six hundred forty-six".