1772390145 has 16 divisors (see below), whose sum is σ = 2836397952. Its totient is φ = 945083520.

The previous prime is 1772390101. The next prime is 1772390177. The reversal of 1772390145 is 5410932771.

It is not a de Polignac number, because 1772390145 - 2⁸ = 1772389889 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96285 + ... + 113205.

It is an arithmetic number, because the mean of its divisors is an integer number (177274872).

Almost surely, 2^1772390145 is an apocalyptic number.

1772390145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1772390145 is a deficient number, since it is larger than the sum of its proper divisors (1064007807).

1772390145 is a wasteful number, since it uses less digits than its factorization.

1772390145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23912.

The product of its (nonzero) digits is 52920, while the sum is 39.

The square root of 1772390145 is about 42099.7641917387. The cubic root of 1772390145 is about 1210.1887429544.

The spelling of 1772390145 in words is "one billion, seven hundred seventy-two million, three hundred ninety thousand, one hundred forty-five".