1506385897 has 4 divisors (see below), whose sum is σ = 1571880960. Its totient is φ = 1440890836.

The previous prime is 1506385877. The next prime is 1506385901. The reversal of 1506385897 is 7985836051.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1506385897 - 2¹⁵ = 1506353129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1506385807) 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 in 3 ways as a sum of consecutive naturals, for example, 32747497 + ... + 32747542.

It is an arithmetic number, because the mean of its divisors is an integer number (392970240).

Almost surely, 2^1506385897 is an apocalyptic number.

It is an amenable number.

1506385897 is a deficient number, since it is larger than the sum of its proper divisors (65495063).

1506385897 is an equidigital number, since it uses as much as digits as its factorization.

1506385897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65495062.

The product of its (nonzero) digits is 1814400, while the sum is 52.

The square root of 1506385897 is about 38812.1874802233. The cubic root of 1506385897 is about 1146.3363932510.

The spelling of 1506385897 in words is "one billion, five hundred six million, three hundred eighty-five thousand, eight hundred ninety-seven".