1617261045 has 16 divisors (see below), whose sum is σ = 2588134272. Its totient is φ = 862367040.

The previous prime is 1617261043. The next prime is 1617261047. The reversal of 1617261045 is 5401627161.

It is an interprime number because it is at equal distance from previous prime (1617261043) and next prime (1617261047).

It is not a de Polignac number, because 1617261045 - 2¹ = 1617261043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1617260997 and 1617261015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1617261043) 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, 112200 + ... + 125790.

It is an arithmetic number, because the mean of its divisors is an integer number (161758392).

Almost surely, 2^1617261045 is an apocalyptic number.

1617261045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1617261045 is a deficient number, since it is larger than the sum of its proper divisors (970873227).

1617261045 is a wasteful number, since it uses less digits than its factorization.

1617261045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21532.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 1617261045 is about 40215.1842591825. The cubic root of 1617261045 is about 1173.7980272300.

The spelling of 1617261045 in words is "one billion, six hundred seventeen million, two hundred sixty-one thousand, forty-five".