1215690038 has 8 divisors (see below), whose sum is σ = 1823770488. Its totient is φ = 607766544.

The previous prime is 1215690031. The next prime is 1215690041. The reversal of 1215690038 is 8300965121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215690031) 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, 17456 + ... + 52307.

It is an arithmetic number, because the mean of its divisors is an integer number (227971311).

Almost surely, 2^1215690038 is an apocalyptic number.

1215690038 is a deficient number, since it is larger than the sum of its proper divisors (608080450).

1215690038 is an equidigital number, since it uses as much as digits as its factorization.

1215690038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78478.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 1215690038 is about 34866.7468800862. The cubic root of 1215690038 is about 1067.2699606512.

The spelling of 1215690038 in words is "one billion, two hundred fifteen million, six hundred ninety thousand, thirty-eight".