1645132350 has 48 divisors (see below), whose sum is σ = 4105973808. Its totient is φ = 435901440.

The previous prime is 1645132297. The next prime is 1645132351. The reversal of 1645132350 is 532315461.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1645132351) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11379 + ... + 58478.

It is an arithmetic number, because the mean of its divisors is an integer number (85541121).

Almost surely, 2^1645132350 is an apocalyptic number.

1645132350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1645132350 is an abundant number, since it is smaller than the sum of its proper divisors (2460841458).

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

1645132350 is a wasteful number, since it uses less digits than its factorization.

1645132350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70029 (or 70024 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 1645132350 is about 40560.2311383947. The cubic root of 1645132350 is about 1180.5025987861.

The spelling of 1645132350 in words is "one billion, six hundred forty-five million, one hundred thirty-two thousand, three hundred fifty".