1215794948 has 6 divisors (see below), whose sum is σ = 2127641166. Its totient is φ = 607897472.

The previous prime is 1215794917. The next prime is 1215794953. The reversal of 1215794948 is 8494975121.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 809288704 + 406506244 = 28448^2 + 20162^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1215794896 and 1215794905.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151974365 + ... + 151974372.

It is an arithmetic number, because the mean of its divisors is an integer number (354606861).

Almost surely, 2^1215794948 is an apocalyptic number.

It is an amenable number.

1215794948 is a deficient number, since it is larger than the sum of its proper divisors (911846218).

1215794948 is a wasteful number, since it uses less digits than its factorization.

1215794948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303948741 (or 303948739 counting only the distinct ones).

The product of its digits is 725760, while the sum is 50.

The square root of 1215794948 is about 34868.2512896761. The cubic root of 1215794948 is about 1067.3006603820.

The spelling of 1215794948 in words is "one billion, two hundred fifteen million, seven hundred ninety-four thousand, nine hundred forty-eight".