1355478634 has 4 divisors (see below), whose sum is σ = 2033217954. Its totient is φ = 677739316.

The previous prime is 1355478613. The next prime is 1355478653. The reversal of 1355478634 is 4368745531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1030217409 + 325261225 = 32097^2 + 18035^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338869657 + ... + 338869660.

Almost surely, 2^1355478634 is an apocalyptic number.

1355478634 is a deficient number, since it is larger than the sum of its proper divisors (677739320).

1355478634 is an equidigital number, since it uses as much as digits as its factorization.

1355478634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677739319.

The product of its digits is 1209600, while the sum is 46.

The square root of 1355478634 is about 36816.8254199082. The cubic root of 1355478634 is about 1106.7025028112.

The spelling of 1355478634 in words is "one billion, three hundred fifty-five million, four hundred seventy-eight thousand, six hundred thirty-four".