1220474357 has 2 divisors, whose sum is σ = 1220474358. Its totient is φ = 1220474356.

The previous prime is 1220474287. The next prime is 1220474383. The reversal of 1220474357 is 7534740221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1050667396 + 169806961 = 32414^2 + 13031^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220474357 - 2³⁰ = 146732533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220474257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610237178 + 610237179.

It is an arithmetic number, because the mean of its divisors is an integer number (610237179).

Almost surely, 2^1220474357 is an apocalyptic number.

It is an amenable number.

1220474357 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220474357 is an equidigital number, since it uses as much as digits as its factorization.

1220474357 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47040, while the sum is 35.

The square root of 1220474357 is about 34935.2881339198. The cubic root of 1220474357 is about 1068.6681997879.

The spelling of 1220474357 in words is "one billion, two hundred twenty million, four hundred seventy-four thousand, three hundred fifty-seven".