1642367445 has 64 divisors (see below), whose sum is σ = 2794881024. Its totient is φ = 822332160.

The previous prime is 1642367443. The next prime is 1642367459. The reversal of 1642367445 is 5447632461.

It is a happy number.

It is not a de Polignac number, because 1642367445 - 2¹ = 1642367443 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1642367397 and 1642367406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1642367443) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2538112 + ... + 2538758.

It is an arithmetic number, because the mean of its divisors is an integer number (43670016).

Almost surely, 2^1642367445 is an apocalyptic number.

1642367445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1642367445 is a deficient number, since it is larger than the sum of its proper divisors (1152513579).

1642367445 is a wasteful number, since it uses less digits than its factorization.

1642367445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842.

The product of its digits is 483840, while the sum is 42.

The square root of 1642367445 is about 40526.1328651032. The cubic root of 1642367445 is about 1179.8408875282.

The spelling of 1642367445 in words is "one billion, six hundred forty-two million, three hundred sixty-seven thousand, four hundred forty-five".