1361212545 has 64 divisors (see below), whose sum is σ = 2723051520. Its totient is φ = 564096000.

The previous prime is 1361212513. The next prime is 1361212553. The reversal of 1361212545 is 5452121631.

It is not a de Polignac number, because 1361212545 - 2⁵ = 1361212513 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 461686 + ... + 464624.

It is an arithmetic number, because the mean of its divisors is an integer number (42547680).

Almost surely, 2^1361212545 is an apocalyptic number.

1361212545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1361212545 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

1361212545 is a wasteful number, since it uses less digits than its factorization.

1361212545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3366.

The product of its digits is 7200, while the sum is 30.

The square root of 1361212545 is about 36894.6140378240. The cubic root of 1361212545 is about 1108.2608224118.

The spelling of 1361212545 in words is "one billion, three hundred sixty-one million, two hundred twelve thousand, five hundred forty-five".