1355642747 has 8 divisors (see below), whose sum is σ = 1497794976. Its totient is φ = 1220424832.

The previous prime is 1355642699. The next prime is 1355642767. The reversal of 1355642747 is 7472465531.

It is a happy number.

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

It is not a de Polignac number, because 1355642747 - 2¹⁰ = 1355641723 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1355642698 and 1355642707.

It is not an unprimeable number, because it can be changed into a prime (1355642767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1733168 + ... + 1733949.

It is an arithmetic number, because the mean of its divisors is an integer number (187224372).

Almost surely, 2^1355642747 is an apocalyptic number.

1355642747 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1355642747 is a deficient number, since it is larger than the sum of its proper divisors (142152229).

1355642747 is a wasteful number, since it uses less digits than its factorization.

1355642747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3467157.

The product of its digits is 705600, while the sum is 44.

The square root of 1355642747 is about 36819.0541296215. The cubic root of 1355642747 is about 1106.7471652485.

The spelling of 1355642747 in words is "one billion, three hundred fifty-five million, six hundred forty-two thousand, seven hundred forty-seven".