1368757490 has 8 divisors (see below), whose sum is σ = 2463763500. Its totient is φ = 547502992.

The previous prime is 1368757487. The next prime is 1368757493. The reversal of 1368757490 is 947578631.

It is an interprime number because it is at equal distance from previous prime (1368757487) and next prime (1368757493).

It can be written as a sum of positive squares in 2 ways, for example, as 1347403849 + 21353641 = 36707^2 + 4621^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1368757490² = 3746994132862200200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1368757493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68437865 + ... + 68437884.

Almost surely, 2^1368757490 is an apocalyptic number.

1368757490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1368757490 is a deficient number, since it is larger than the sum of its proper divisors (1095006010).

1368757490 is a wasteful number, since it uses less digits than its factorization.

1368757490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136875756.

The product of its (nonzero) digits is 1270080, while the sum is 50.

The square root of 1368757490 is about 36996.7226926927. The cubic root of 1368757490 is about 1110.3046778812.

The spelling of 1368757490 in words is "one billion, three hundred sixty-eight million, seven hundred fifty-seven thousand, four hundred ninety".