1642448870 has 32 divisors (see below), whose sum is σ = 3066443136. Its totient is φ = 632880000.

The previous prime is 1642448867. The next prime is 1642448879. The reversal of 1642448870 is 788442461.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1642448879) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15395 + ... + 59345.

It is an arithmetic number, because the mean of its divisors is an integer number (95826348).

Almost surely, 2^1642448870 is an apocalyptic number.

1642448870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1642448870 is a deficient number, since it is larger than the sum of its proper divisors (1423994266).

1642448870 is a wasteful number, since it uses less digits than its factorization.

1642448870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44096.

The product of its (nonzero) digits is 344064, while the sum is 44.

The square root of 1642448870 is about 40527.1374513424. The cubic root of 1642448870 is about 1179.8603851862.

The spelling of 1642448870 in words is "one billion, six hundred forty-two million, four hundred forty-eight thousand, eight hundred seventy".