1461810156 has 12 divisors (see below), whose sum is σ = 3410890392. Its totient is φ = 487270048.

The previous prime is 1461810151. The next prime is 1461810157. The reversal of 1461810156 is 6510181641.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (1461810151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60908745 + ... + 60908768.

It is an arithmetic number, because the mean of its divisors is an integer number (284240866).

Almost surely, 2^1461810156 is an apocalyptic number.

It is an amenable number.

1461810156 is an abundant number, since it is smaller than the sum of its proper divisors (1949080236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1461810156 is a wasteful number, since it uses less digits than its factorization.

1461810156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121817520 (or 121817518 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 33.

The square root of 1461810156 is about 38233.6259855118. The cubic root of 1461810156 is about 1134.9158420526.

Adding to 1461810156 its reverse (6510181641), we get a palindrome (7971991797).

The spelling of 1461810156 in words is "one billion, four hundred sixty-one million, eight hundred ten thousand, one hundred fifty-six".