1642273454 has 8 divisors (see below), whose sum is σ = 2477020728. Its totient is φ = 816599880.

The previous prime is 1642273397. The next prime is 1642273459. The reversal of 1642273454 is 4543722461.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1642273459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2267972 + ... + 2268695.

It is an arithmetic number, because the mean of its divisors is an integer number (309627591).

Almost surely, 2^1642273454 is an apocalyptic number.

1642273454 is a deficient number, since it is larger than the sum of its proper divisors (834747274).

1642273454 is a wasteful number, since it uses less digits than its factorization.

1642273454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4536850.

The product of its digits is 161280, while the sum is 38.

The square root of 1642273454 is about 40524.9732140565. The cubic root of 1642273454 is about 1179.8183800719.

The spelling of 1642273454 in words is "one billion, six hundred forty-two million, two hundred seventy-three thousand, four hundred fifty-four".