1215995046 has 32 divisors (see below), whose sum is σ = 2787025920. Its totient is φ = 346476096.

The previous prime is 1215995021. The next prime is 1215995063. The reversal of 1215995046 is 6405995121.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 1215994989 and 1215995007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24031 + ... + 54858.

It is an arithmetic number, because the mean of its divisors is an integer number (87094560).

Almost surely, 2^1215995046 is an apocalyptic number.

1215995046 is an abundant number, since it is smaller than the sum of its proper divisors (1571030874).

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

1215995046 is a wasteful number, since it uses less digits than its factorization.

1215995046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79268.

The product of its (nonzero) digits is 97200, while the sum is 42.

The square root of 1215995046 is about 34871.1205154064. The cubic root of 1215995046 is about 1067.3592100064.

The spelling of 1215995046 in words is "one billion, two hundred fifteen million, nine hundred ninety-five thousand, forty-six".