1633730745 has 32 divisors (see below), whose sum is σ = 2712382848. Its totient is φ = 839006208.

The previous prime is 1633730741. The next prime is 1633730767. The reversal of 1633730745 is 5470373361.

It is a happy number.

It is not a de Polignac number, because 1633730745 - 2² = 1633730741 is a prime.

It is a super-2 number, since 2×1633730745² = 5338152294316510050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1633730741) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38662 + ... + 69008.

It is an arithmetic number, because the mean of its divisors is an integer number (84761964).

Almost surely, 2^1633730745 is an apocalyptic number.

1633730745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1633730745 is a deficient number, since it is larger than the sum of its proper divisors (1078652103).

1633730745 is a wasteful number, since it uses less digits than its factorization.

1633730745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30489.

The product of its (nonzero) digits is 158760, while the sum is 39.

The square root of 1633730745 is about 40419.4352385087. The cubic root of 1633730745 is about 1177.7691128092.

The spelling of 1633730745 in words is "one billion, six hundred thirty-three million, seven hundred thirty thousand, seven hundred forty-five".