1340148947 has 8 divisors (see below), whose sum is σ = 1419301296. Its totient is φ = 1261032192.

The previous prime is 1340148893. The next prime is 1340148973. The reversal of 1340148947 is 7498410431.

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

It is a cyclic number.

It is not a de Polignac number, because 1340148947 - 2²² = 1335954643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1340148977) 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, 138863 + ... + 148199.

It is an arithmetic number, because the mean of its divisors is an integer number (177412662).

Almost surely, 2^1340148947 is an apocalyptic number.

1340148947 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1340148947 is a deficient number, since it is larger than the sum of its proper divisors (79152349).

1340148947 is an equidigital number, since it uses as much as digits as its factorization.

1340148947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17797.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 1340148947 is about 36608.0448398982. The cubic root of 1340148947 is about 1102.5146182351.

The spelling of 1340148947 in words is "one billion, three hundred forty million, one hundred forty-eight thousand, nine hundred forty-seven".