1642191360 has 80 divisors (see below), whose sum is σ = 5249905056. Its totient is φ = 437915648.

The previous prime is 1642191349. The next prime is 1642191367. The reversal of 1642191360 is 631912461.

It is a tau number, because it is divible by the number of its divisors (80).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1642191367) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99234 + ... + 114593.

Almost surely, 2^1642191360 is an apocalyptic number.

1642191360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1642191360 is an abundant number, since it is smaller than the sum of its proper divisors (3607713696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1642191360 is an equidigital number, since it uses as much as digits as its factorization.

1642191360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213853 (or 213837 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 1642191360 is about 40523.9603197911. The cubic root of 1642191360 is about 1179.7987208156.

The spelling of 1642191360 in words is "one billion, six hundred forty-two million, one hundred ninety-one thousand, three hundred sixty".