1618032481 has 16 divisors (see below), whose sum is σ = 1782756864. Its totient is φ = 1459174464.

The previous prime is 1618032463. The next prime is 1618032499. The reversal of 1618032481 is 1842308161.

It is an interprime number because it is at equal distance from previous prime (1618032463) and next prime (1618032499).

It is a cyclic number.

It is not a de Polignac number, because 1618032481 - 2¹¹ = 1618030433 is a prime.

It is a super-2 number, since 2×1618032481² = 5236058219142030722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1618032401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 393271 + ... + 397363.

It is an arithmetic number, because the mean of its divisors is an integer number (111422304).

Almost surely, 2^1618032481 is an apocalyptic number.

It is an amenable number.

1618032481 is a deficient number, since it is larger than the sum of its proper divisors (164724383).

1618032481 is a wasteful number, since it uses less digits than its factorization.

1618032481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4800.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 1618032481 is about 40224.7744679818. The cubic root of 1618032481 is about 1173.9846320496.

The spelling of 1618032481 in words is "one billion, six hundred eighteen million, thirty-two thousand, four hundred eighty-one".