1934661757 has 24 divisors (see below), whose sum is σ = 2391236640. Its totient is φ = 1556241120.

The previous prime is 1934661737. The next prime is 1934661763. The reversal of 1934661757 is 7571664391.

It is not a de Polignac number, because 1934661757 - 2¹¹ = 1934659709 is a prime.

It is a super-2 number, since 2×1934661757² = 7485832227996654098, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a self number, because there is not a number n which added to its sum of digits gives 1934661757.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1934661737) 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, 89907 + ... + 109327.

It is an arithmetic number, because the mean of its divisors is an integer number (99634860).

Almost surely, 2^1934661757 is an apocalyptic number.

It is an amenable number.

1934661757 is a deficient number, since it is larger than the sum of its proper divisors (456574883).

1934661757 is a wasteful number, since it uses less digits than its factorization.

1934661757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19561 (or 19554 counting only the distinct ones).

The product of its digits is 952560, while the sum is 49.

The square root of 1934661757 is about 43984.7900642938. The cubic root of 1934661757 is about 1246.0486977558.

The spelling of 1934661757 in words is "one billion, nine hundred thirty-four million, six hundred sixty-one thousand, seven hundred fifty-seven".