1220762513 has 8 divisors (see below), whose sum is σ = 1282392000. Its totient is φ = 1159845808.

The previous prime is 1220762479. The next prime is 1220762519. The reversal of 1220762513 is 3152670221.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1220762513 - 2¹⁰ = 1220761489 is a prime.

It is a super-2 number, since 2×1220762513² = 2980522226292150338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220762519) 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, 174683 + ... + 181536.

It is an arithmetic number, because the mean of its divisors is an integer number (160299000).

Almost surely, 2^1220762513 is an apocalyptic number.

It is an amenable number.

1220762513 is a deficient number, since it is larger than the sum of its proper divisors (61629487).

1220762513 is a wasteful number, since it uses less digits than its factorization.

1220762513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356391.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 1220762513 is about 34939.4120299698. The cubic root of 1220762513 is about 1068.7522979420.

The spelling of 1220762513 in words is "one billion, two hundred twenty million, seven hundred sixty-two thousand, five hundred thirteen".