1375505851 has 2 divisors, whose sum is σ = 1375505852. Its totient is φ = 1375505850.

The previous prime is 1375505783. The next prime is 1375505927. The reversal of 1375505851 is 1585055731.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1375505851 - 2¹⁷ = 1375374779 is a prime.

It is a super-2 number, since 2×1375505851² = 3784032692270468402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1375505951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 687752925 + 687752926.

It is an arithmetic number, because the mean of its divisors is an integer number (687752926).

Almost surely, 2^1375505851 is an apocalyptic number.

1375505851 is a deficient number, since it is larger than the sum of its proper divisors (1).

1375505851 is an equidigital number, since it uses as much as digits as its factorization.

1375505851 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105000, while the sum is 40.

The square root of 1375505851 is about 37087.8127017488. The cubic root of 1375505851 is about 1112.1263925115.

The spelling of 1375505851 in words is "one billion, three hundred seventy-five million, five hundred five thousand, eight hundred fifty-one".