1913947 has 8 divisors (see below), whose sum is σ = 2218752. Its totient is φ = 1617000.

The previous prime is 1913941. The next prime is 1913957. The reversal of 1913947 is 7493191.

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

It is not a de Polignac number, because 1913947 - 2³ = 1913939 is a prime.

It is a pancake number, because a pancake can be divided into 1913947 parts by 1956 straight cuts.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1913941) 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, 1429 + ... + 2422.

It is an arithmetic number, because the mean of its divisors is an integer number (277344).

2^1913947 is an apocalyptic number.

1913947 is a deficient number, since it is larger than the sum of its proper divisors (304805).

1913947 is an equidigital number, since it uses as much as digits as its factorization.

1913947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3929.

The product of its digits is 6804, while the sum is 34.

The square root of 1913947 is about 1383.4547336288. The cubic root of 1913947 is about 124.1585510864.

The spelling of 1913947 in words is "one million, nine hundred thirteen thousand, nine hundred forty-seven".