1947342285 has 24 divisors (see below), whose sum is σ = 3857592960. Its totient is φ = 890213472.

The previous prime is 1947342263. The next prime is 1947342307. The reversal of 1947342285 is 5822437491.

It is an interprime number because it is at equal distance from previous prime (1947342263) and next prime (1947342307).

It is not a de Polignac number, because 1947342285 - 2¹² = 1947338189 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1947342285.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3090705 + ... + 3091334.

It is an arithmetic number, because the mean of its divisors is an integer number (160733040).

Almost surely, 2^1947342285 is an apocalyptic number.

1947342285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1947342285 is a deficient number, since it is larger than the sum of its proper divisors (1910250675).

1947342285 is a wasteful number, since it uses less digits than its factorization.

1947342285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6182057 (or 6182054 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 1947342285 is about 44128.7013745023. The cubic root of 1947342285 is about 1248.7651346210.

The spelling of 1947342285 in words is "one billion, nine hundred forty-seven million, three hundred forty-two thousand, two hundred eighty-five".