1622440545 has 32 divisors (see below), whose sum is σ = 2835440640. Its totient is φ = 785653440.

The previous prime is 1622440513. The next prime is 1622440559. The reversal of 1622440545 is 5450442261.

It is not a de Polignac number, because 1622440545 - 2⁵ = 1622440513 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 136012 + ... + 147458.

It is an arithmetic number, because the mean of its divisors is an integer number (88607520).

Almost surely, 2^1622440545 is an apocalyptic number.

1622440545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1622440545 is a deficient number, since it is larger than the sum of its proper divisors (1213000095).

1622440545 is a wasteful number, since it uses less digits than its factorization.

1622440545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12325.

The product of its (nonzero) digits is 38400, while the sum is 33.

The square root of 1622440545 is about 40279.5300990466. The cubic root of 1622440545 is about 1175.0497748644.

The spelling of 1622440545 in words is "one billion, six hundred twenty-two million, four hundred forty thousand, five hundred forty-five".