1620315151 has 8 divisors (see below), whose sum is σ = 1994234144. Its totient is φ = 1282007520.

The previous prime is 1620315143. The next prime is 1620315167. The reversal of 1620315151 is 1515130261.

It is a happy number.

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 1620315151 - 2³ = 1620315143 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1620315181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8902740 + ... + 8902921.

It is an arithmetic number, because the mean of its divisors is an integer number (249279268).

Almost surely, 2^1620315151 is an apocalyptic number.

1620315151 is a deficient number, since it is larger than the sum of its proper divisors (373918993).

1620315151 is a wasteful number, since it uses less digits than its factorization.

1620315151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17805681.

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 1620315151 is about 40253.1383993845. The cubic root of 1620315151 is about 1174.5364463294.

The spelling of 1620315151 in words is "one billion, six hundred twenty million, three hundred fifteen thousand, one hundred fifty-one".