1916154493 has 8 divisors (see below), whose sum is σ = 2102869440. Its totient is φ = 1731526080.

The previous prime is 1916154481. The next prime is 1916154521. The reversal of 1916154493 is 3944516191.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1916154493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1916154193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 519708 + ... + 523381.

It is an arithmetic number, because the mean of its divisors is an integer number (262858680).

Almost surely, 2^1916154493 is an apocalyptic number.

It is an amenable number.

1916154493 is a deficient number, since it is larger than the sum of its proper divisors (186714947).

1916154493 is a wasteful number, since it uses less digits than its factorization.

1916154493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043267.

The product of its digits is 116640, while the sum is 43.

The square root of 1916154493 is about 43773.9019622423. The cubic root of 1916154493 is about 1242.0626641463.

The spelling of 1916154493 in words is "one billion, nine hundred sixteen million, one hundred fifty-four thousand, four hundred ninety-three".