1916747742 has 64 divisors (see below), whose sum is σ = 4766920704. Its totient is φ = 500290560.

The previous prime is 1916747713. The next prime is 1916747743. The reversal of 1916747742 is 2477476191.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1916747691 and 1916747700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1916747743) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34867 + ... + 71057.

It is an arithmetic number, because the mean of its divisors is an integer number (74483136).

Almost surely, 2^1916747742 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1916747742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2383460352).

1916747742 is an abundant number, since it is smaller than the sum of its proper divisors (2850172962).

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

1916747742 is a wasteful number, since it uses less digits than its factorization.

1916747742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36313.

The product of its digits is 592704, while the sum is 48.

The square root of 1916747742 is about 43780.6777243112. The cubic root of 1916747742 is about 1242.1908334223.

The spelling of 1916747742 in words is "one billion, nine hundred sixteen million, seven hundred forty-seven thousand, seven hundred forty-two".