1351820379 has 96 divisors (see below), whose sum is σ = 2455541760. Its totient is φ = 653184000.

The previous prime is 1351820363. The next prime is 1351820383. The reversal of 1351820379 is 9730281531.

It is not a de Polignac number, because 1351820379 - 2⁴ = 1351820363 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (1351820339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1124979 + ... + 1126179.

It is an arithmetic number, because the mean of its divisors is an integer number (25578560).

Almost surely, 2^1351820379 is an apocalyptic number.

1351820379 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1351820379 is a deficient number, since it is larger than the sum of its proper divisors (1103721381).

1351820379 is a wasteful number, since it uses less digits than its factorization.

1351820379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1281 (or 1274 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 1351820379 is about 36767.1100169703. The cubic root of 1351820379 is about 1105.7059919250.

The spelling of 1351820379 in words is "one billion, three hundred fifty-one million, eight hundred twenty thousand, three hundred seventy-nine".