383788923049 has 45 divisors (see below), whose sum is σ = 459162795767. Its totient is φ = 320765856432.

The previous prime is 383788923031. The next prime is 383788923061. The reversal of 383788923049 is 940329887383.

The square root of 383788923049 is 619507.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 25251434649 + 358537488400 = 158907^2 + 598780^2 .

It is not a de Polignac number, because 383788923049 - 2⁹ = 383788922537 is a prime.

It is a super-2 number, since 2×383788923049² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (383788920049) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 1426724487 + ... + 1426724755.

Almost surely, 2^383788923049 is an apocalyptic number.

383788923049 is the 619507-th square number.

383788923049 is the 309754-th centered octagonal number.

It is an amenable number.

383788923049 is a deficient number, since it is larger than the sum of its proper divisors (75373872718).

383788923049 is an frugal number, since it uses more digits than its factorization.

383788923049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 660 (or 323 counting only the distinct ones).

The product of its (nonzero) digits is 62705664, while the sum is 64.

Multiplying 383788923049 by its sum of digits (64), we get a square (24562491075136 = 4956056²).

It can be divided in two parts, 38378892 and 3049, that added together give a triangular number (38381941 = T₈₇₆₁).

The spelling of 383788923049 in words is "three hundred eighty-three billion, seven hundred eighty-eight million, nine hundred twenty-three thousand, forty-nine".