3145555538 has 4 divisors (see below), whose sum is σ = 4718333310. Its totient is φ = 1572777768.

The previous prime is 3145555537. The next prime is 3145555549. The reversal of 3145555538 is 8355555413.

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., 1724491729 + 1421063809 = 41527^2 + 37697^2 .

It is not an unprimeable number, because it can be changed into a prime (3145555537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 786388883 + ... + 786388886.

Almost surely, 2^3145555538 is an apocalyptic number.

3145555538 is a deficient number, since it is larger than the sum of its proper divisors (1572777772).

3145555538 is a wasteful number, since it uses less digits than its factorization.

3145555538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1572777771.

The product of its digits is 900000, while the sum is 44.

The square root of 3145555538 is about 56085.2524109502. The cubic root of 3145555538 is about 1465.2074532173.

It can be divided in two parts, 3 and 145555538, that added together give a palindrome (145555541).

The spelling of 3145555538 in words is "three billion, one hundred forty-five million, five hundred fifty-five thousand, five hundred thirty-eight".