745185186313541 has 8 divisors (see below), whose sum is σ = 745341346103640. Its totient is φ = 745029029302272.

The previous prime is 745185186313493. The next prime is 745185186313609. The reversal of 745185186313541 is 145313681581547.

It can be written as a sum of positive squares in 4 ways, for example, as 1502289011041 + 743682897302500 = 1225679^2 + 27270550^2 .

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-745185186313541 is a prime.

It is a super-2 number, since 2×745185186313541² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745185186303541) 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, 587706875 + ... + 588973463.

It is an arithmetic number, because the mean of its divisors is an integer number (93167668262955).

Almost surely, 2^{745185186313541} is an apocalyptic number.

It is an amenable number.

745185186313541 is a deficient number, since it is larger than the sum of its proper divisors (156159790099).

745185186313541 is a wasteful number, since it uses less digits than its factorization.

745185186313541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1389415.

The product of its digits is 48384000, while the sum is 62.

The spelling of 745185186313541 in words is "seven hundred forty-five trillion, one hundred eighty-five billion, one hundred eighty-six million, three hundred thirteen thousand, five hundred forty-one".