1361411551 has 4 divisors (see below), whose sum is σ = 1376708400. Its totient is φ = 1346114704.

The previous prime is 1361411543. The next prime is 1361411573. The reversal of 1361411551 is 1551141631.

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

It is a cyclic number.

It is not a de Polignac number, because 1361411551 - 2³ = 1361411543 is a prime.

It is a super-2 number, since 2×1361411551² = 3706882822392451202, which 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 (1361411501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7648291 + ... + 7648468.

It is an arithmetic number, because the mean of its divisors is an integer number (344177100).

Almost surely, 2^1361411551 is an apocalyptic number.

1361411551 is a deficient number, since it is larger than the sum of its proper divisors (15296849).

1361411551 is an equidigital number, since it uses as much as digits as its factorization.

1361411551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15296848.

The product of its digits is 1800, while the sum is 28.

The square root of 1361411551 is about 36897.3108911747. The cubic root of 1361411551 is about 1108.3148281356.

The spelling of 1361411551 in words is "one billion, three hundred sixty-one million, four hundred eleven thousand, five hundred fifty-one".