1215053016 has 32 divisors (see below), whose sum is σ = 3169704960. Its totient is φ = 387408032.

The previous prime is 1215053011. The next prime is 1215053017. The reversal of 1215053016 is 6103505121.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215053011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1100040 + ... + 1101143.

It is an arithmetic number, because the mean of its divisors is an integer number (99053280).

Almost surely, 2^1215053016 is an apocalyptic number.

It is an amenable number.

1215053016 is an abundant number, since it is smaller than the sum of its proper divisors (1954651944).

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

1215053016 is a wasteful number, since it uses less digits than its factorization.

1215053016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2201215 (or 2201211 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 1215053016 is about 34857.6105893677. The cubic root of 1215053016 is about 1067.0835114715.

Adding to 1215053016 its reverse (6103505121), we get a palindrome (7318558137).

It can be divided in two parts, 12150 and 53016, that multiplied together give a square (644144400 = 25380²).

The spelling of 1215053016 in words is "one billion, two hundred fifteen million, fifty-three thousand, sixteen".