1620525234 has 8 divisors (see below), whose sum is σ = 3241050480. Its totient is φ = 540175076.

The previous prime is 1620525227. The next prime is 1620525241. The reversal of 1620525234 is 4325250261.

It is an interprime number because it is at equal distance from previous prime (1620525227) and next prime (1620525241).

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

1620525234 is an admirable number.

It is a super-2 number, since 2×1620525234² = 5252204068061509512, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135043764 + ... + 135043775.

It is an arithmetic number, because the mean of its divisors is an integer number (405131310).

Almost surely, 2^1620525234 is an apocalyptic number.

1620525234 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1620525234 is a wasteful number, since it uses less digits than its factorization.

1620525234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270087544.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 1620525234 is about 40255.7478380417. The cubic root of 1620525234 is about 1174.5872058944.

Adding to 1620525234 its reverse (4325250261), we get a palindrome (5945775495).

The spelling of 1620525234 in words is "one billion, six hundred twenty million, five hundred twenty-five thousand, two hundred thirty-four".