1642743355 has 8 divisors (see below), whose sum is σ = 2150500464. Its totient is φ = 1194722400.

The previous prime is 1642743341. The next prime is 1642743383. The reversal of 1642743355 is 5533472461.

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 1642743355 - 2²³ = 1634354747 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14933976 + ... + 14934085.

It is an arithmetic number, because the mean of its divisors is an integer number (268812558).

Almost surely, 2^1642743355 is an apocalyptic number.

1642743355 is a deficient number, since it is larger than the sum of its proper divisors (507757109).

1642743355 is a wasteful number, since it uses less digits than its factorization.

1642743355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29868077.

The product of its digits is 302400, while the sum is 40.

The square root of 1642743355 is about 40530.7704713345. The cubic root of 1642743355 is about 1179.9308958382.

The spelling of 1642743355 in words is "one billion, six hundred forty-two million, seven hundred forty-three thousand, three hundred fifty-five".