1361810151 has 48 divisors (see below), whose sum is σ = 2292466176. Its totient is φ = 801557856.

The previous prime is 1361810141. The next prime is 1361810167. The reversal of 1361810151 is 1510181631.

It is a happy number.

It is not a de Polignac number, because 1361810151 - 2²¹ = 1359712999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1361810111) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 63286 + ... + 82028.

It is an arithmetic number, because the mean of its divisors is an integer number (47759712).

Almost surely, 2^1361810151 is an apocalyptic number.

1361810151 is a deficient number, since it is larger than the sum of its proper divisors (930656025).

1361810151 is a wasteful number, since it uses less digits than its factorization.

1361810151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18794 (or 18782 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 27.

The square root of 1361810151 is about 36902.7119735122. The cubic root of 1361810151 is about 1108.4229833275.

Adding to 1361810151 its reverse (1510181631), we get a palindrome (2871991782).

The spelling of 1361810151 in words is "one billion, three hundred sixty-one million, eight hundred ten thousand, one hundred fifty-one".