1358231738 has 4 divisors (see below), whose sum is σ = 2037347610. Its totient is φ = 679115868.

The previous prime is 1358231731. The next prime is 1358231767. The reversal of 1358231738 is 8371328531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1316020729 + 42211009 = 36277^2 + 6497^2 .

It is a super-2 number, since 2×1358231738² = 3689586908221001288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1358231695 and 1358231704.

It is not an unprimeable number, because it can be changed into a prime (1358231731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339557933 + ... + 339557936.

Almost surely, 2^1358231738 is an apocalyptic number.

1358231738 is a deficient number, since it is larger than the sum of its proper divisors (679115872).

1358231738 is an equidigital number, since it uses as much as digits as its factorization.

1358231738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679115871.

The product of its digits is 120960, while the sum is 41.

The square root of 1358231738 is about 36854.1956634519. The cubic root of 1358231738 is about 1107.4512682317.

The spelling of 1358231738 in words is "one billion, three hundred fifty-eight million, two hundred thirty-one thousand, seven hundred thirty-eight".